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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 2511. Отображено 101.
29-07-1997 дата публикации

Номер: KR19970050421A
Автор:
Принадлежит:

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Номер записи: 1
16-02-2012 дата публикации

Hybrid Near-Field Transducer For Heat Assisted Magnetic Recording

Номер: US20120039155A1
Автор: Chubing Peng, Jie Zou, Kaizhong Gao, Michael Allen Seigler
Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus includes a planar waveguide having a core layer and a cladding layer adjacent to the core layer, the waveguide being shaped to direct light to a focal point; a magnetic pole adjacent to the cladding layer; and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes an enlarged portion and a peg having a first end positioned adjacent to an end of the waveguide and a second end positioned adjacent to a side of the enlarged portion. A data storage device that includes the apparatus is also provided.

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Номер записи: 2
22-03-2012 дата публикации

System, method and apparatus for fabricating a c-aperture or e-antenna plasmonic near field source for thermal assisted recording applications

Номер: US20120070784A1
Автор: Barry Cushing Stipe, Hamid Balamane, Jordan Asher Katine, Thomas Dudley Boone, JR.
Принадлежит: Hitachi Global Storage Technologies Netherlands BV

A method of fabricating a c-aperture or E-antenna plasmonic near field source for thermal assisted recording applications in hard disk drives is disclosed. A c-aperture or E-antenna is built for recording head applications. The technique employs e-beam lithography, partial reactive ion etching and metal refill to build the c-apertures. This process strategy has the advantage over other techniques in the self-alignment of the c-aperture notch to the c-aperture internal diameter, the small number of process steps required, and the precise and consistent shape of the c-aperture notch itself.

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Номер записи: 3
05-04-2012 дата публикации

Optical pickup device

Номер: US20120082020A1
Автор: Kenji Nagatomi
Принадлежит: Sanyo Electric Co Ltd

An astigmatism element converges laser light in first and second directions to generate focal lines. A spectral element makes propagating directions of light fluxes entered into first through fourth areas different from each other to disperse the four light fluxes from each other. The direction along which the first and second areas are aligned is in parallel to a direction of a track image of a recording medium projected onto the spectral element. Each of the first and second areas has a surface area larger than a surface area of each of the third and fourth areas, and a boundary portion between the first and second areas, and the third and fourth areas includes a straight portion extending in a direction perpendicular to the direction of the track image.

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Номер записи: 4
12-04-2012 дата публикации

Method of manufacturing thermal assisted magnetic write head

Номер: US20120084969A1
Автор: Kosuke Tanaka, Shinji Hara, Tsutomu Chou, Yasutoshi Fujita
Принадлежит: SAE Magnetics HK Ltd, TDK Corp

A method of manufacturing a thermally-assisted magnetic write head is provided. The method includes steps of: forming a laminate structure including the waveguide; the plasmon generator, and the magnetic pole in order; performing a first polishing process to planarize an end surface of the laminate structure; performing a first etching process to remove impurity attached on the end surface of the laminate structure, and to allow the plasmon generator to be recessed from the waveguide and the magnetic pole, thereby forming a recessed region on the end surface of the laminate structure; forming a protection layer on the end surface of the laminate structure such that at least the recessed region is filled; and performing a second polishing process on the end surface of the laminate structure formed with the protection layer until the plasmon generator is exposed, thereby completing the air bearing surface.

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Номер записи: 5
14-06-2012 дата публикации

Optical head device, optical information device, and information processing device

Номер: US20120151508A1
Автор: Hideki Nakata, Joji Anzai, Keisuke Fujimoto, Kousei Sano, Takeharu Yamamoto, Takeshi Shimamoto, Yasumori Hino, Yoshiaki Komma
Принадлежит: Panasonic Corp

When information is recorded or reproduced on or from an optical information medium having three or more recording layers using blue light, interference by another layer light is reduced and, when information is reproduced from an optical information medium using red light, an S/N ratio is held excellently high. An optical head device includes a first laser light source ( 1 ) which emits blue light, a second laser light source ( 2 ) which emits red light, an objective lens ( 11 ) which focuses the blue light onto a recording layer of a first optical disc ( 12 ) or focuses the red light onto a recording layer of a second optical disc ( 13 ), a photodetector ( 9 ) which receives the blue light reflected by the recording layer of the first optical disc ( 12 ) or the red light reflected by the recording layer of the second optical disc ( 13 ) and outputs an electric signal in accordance with an amount of the received blue light or red light, and a wavelength selective light blocking region ( 7 x ) which blocks a predetermined range of the blue light including an optical axis thereof to prevent the predetermined range from reaching the photodetector ( 9 ), and transmits the red light.

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Номер записи: 6
05-07-2012 дата публикации

Optical head device, optical information device and information processing device

Номер: US20120170431A1
Автор: Kousei Sano, Yoshiaki Komma
Принадлежит: Panasonic Corp

An optical head device includes a light blocking region ( 7 y ) which is disposed on a light flux of a reflected light beam resulting from reflection by a recording layer on which a blue light beam is focused, and blocks, when there are at least two recording layers on a blue light beam incident side of the recording layer on which the blue light beam is focused or on a side thereof opposite to the blue light beam incident side, reflected light beams resulting from reflection by the at least two recording layers which are incident on a region in a photodetector ( 9 ) where the reflected light beams resulting from the reflection by the at least two recording layers interfere with each other. The light blocking region ( 7 y ) is not formed on an optical axis of the reflected light beam resulting from the reflection by the recording layer on which the blue light beam is focused. This configuration allows an improvement in the S/N ratio of a signal outputted from the photodetector.

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Номер записи: 7
04-10-2012 дата публикации

Magnetic head for microwave assisted magnetic recording

Номер: US20120250472A1
Автор: Akimasa Kaizu, Hayato Koike, Naomichi Degawa, Takekazu Yamane, Yoshikazu Soeno
Принадлежит: TDK Corp

A magnetic head that writes information to a recording medium includes a magnetic pole layer that generates a writing magnetic field to the recording medium, a microstripline that is disposed in proximity to the magnetic pole layer and to which high frequency current is applied, and a ferromagnetic thin film that is disposed on a portion of the microstripline that faces the recording medium, and that generates a high frequency alternate-current (AC) magnetic field to be applied to the recording medium, using a current magnetic field generated on the microstripline due to the high frequency current.

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Номер записи: 8
08-11-2012 дата публикации

Method of Forming a Plasmon Antenna with Magnetic Core for Thermally Assisted Magnetic Recording

Номер: US20120279051A1
Автор: Erhard Schreck, Joe Smyth, Kenichi Takano, Moris Dovek, Xuhui Jin, Yuchen Zhou
Принадлежит: Headway Technologies Inc

A method of forming a TAMR (Thermal Assisted Magnetic Recording) write head that uses the energy of optical-laser generated edge plasmons in a plasmon antenna to locally heat a magnetic recording medium and reduce its coercivity and magnetic anisotropy. The method incorporates forming a magnetic core within the plasmon antenna, so the antenna effectively becomes an extension of the magnetic pole and produces a magnetic field whose maximum gradient overlaps the region being heated by the edge plasmons generated in the conducting layer of the antenna surrounding the antenna's magnetic core.

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Номер записи: 9
08-11-2012 дата публикации

Optical pickup and optical information storage medium system using the same

Номер: US20120281516A1
Автор: Jin-Ho Jung
Принадлежит: Toshiba Samsung Storage Technology Korea Corp

An optical pick-up is provided. The optical pick-up includes a light source, a first objective lens configured to focus light emitted from the light source on a high-density optical information storage medium, a photo-detector configured to detect a signal by receiving light reflected from the high-density optical information storage medium, an optical-path changer configured to convert a travel path of incident light to allow the light emitted from the light source to proceed toward the high-density optical information storage medium, and to allow the light reflected from the high-density optical information storage medium to proceed toward the photo-detector, and a blocking device disposed in an optical path of signal light reflected from a target reproducing/recording layer of the high-density optical information storage medium, passes through the first objective lens, and proceeds toward the photo-detector.

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Номер записи: 10
13-12-2012 дата публикации

Near-Field Transducers for Focusing Light

Номер: US20120314549A1
Автор: Amit Vasant Itagi, Kaizhong Gao, Lien Lee, William Albert Challener, Xuhui Jin
Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a dielectric component and a metallic component positioned adjacent to at least a portion of the dielectric component. An apparatus includes a waveguide shaped to direct light to a focal point, and a near-field transducer positioned adjacent to the focal point, wherein the near-field transducer includes a first metallic component, a first dielectric layer positioned adjacent to at least a portion of the first metallic component, and a second metallic component positioned adjacent to at least a portion of the first dielectric component.

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Номер записи: 11
20-12-2012 дата публикации

Thermally Assisted Magnetic Head Assembly and Magnetic Disk Device

Номер: US20120320719A1
Автор: Irizo Naniwa, Junichiro Shimizu, Satoshi Arai, Shigeyuki Sasaki, Takuya Matsumoto
Принадлежит: HITACHI LTD

A slider including a magnetic head part, an optical waveguide, and a near field element is fixed by first and second adhesives to a submount on which a semiconductor laser and a mirror are mounted, the mirror being placed at one end of the semiconductor laser in a resonance direction thereof and reflecting a laser in a direction intersecting with the resonance direction. At this time, at least parts of the first and second adhesives are applied to a position opposed to the semiconductor laser with an intermediation of the submount. The first adhesive having a higher Young's modulus than that of the second adhesive is applied onto an inflow end side of the slider including a solder connection portion, the second adhesive being applied onto an outflow end side of the slider.

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Номер записи: 12
10-01-2013 дата публикации

Optical pickup apparatus

Номер: US20130010178A1
Автор: Shinzoh Murakami
Принадлежит: Sharp Corp

There is provided an optical pickup apparatus. In an optical pickup apparatus, a focus diffraction region includes focus regions of which a number of types is equal to a number of types of light that can be emitted by a light source. The types of the focus regions correspond to the respective types of light, the respective focus regions diffract the corresponding types of light toward same positions of focus light-receiving regions. The focus regions include a plurality of focus segmented regions. The plurality of focus segmented regions of the respective types of focus regions are periodically distributed in the focus diffraction region, and at least some of the focus segmented regions are disposed to be adjacent to focus segmented regions for different types of light.

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Номер записи: 13
17-01-2013 дата публикации

Optical disk apparatus

Номер: US20130016594A1
Автор: Kenji Fujiune, Kenji Kondo, Takeharu Yamamoto
Принадлежит: Panasonic Corp

Provided is an optical disk apparatus capable achieving stable focus control or tracking control. A first detector receives reflected light from an object lens optical system, a second detector receives reflected light from a prescribed information layer, a positional deviation determination unit determines positional deviation between a focal point of a light beam and a point where information on the prescribed information layer is recorded or reproduced, on the basis of a signal from the second detector, a stray light determination unit determines a surface stray light component which is reflected light from the surface of an optical disk and is included in the signal from the positional deviation determination unit, on the basis of the signal from the first detector, and a stray light correction unit corrects the signal output from the positional deviation determination unit on the basis of the surface stray light component thus determined.

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Номер записи: 14
28-11-2013 дата публикации

Recording head and disk device including the same

Номер: US20130314818A1
Автор: Kenichiro Yamada, Noayuki Narita, Takuya Maatsumoto
Принадлежит: Individual

A recording head includes a main magnetic pole generating a recording magnetic field in a direction perpendicular to a recording medium, a write shield magnetic pole facing a trailing side of the main magnetic pole, a recording coil exciting a magnetic flux in a magnetic circuit, and a spin torque oscillator provided between the main magnetic pole and the write shield magnetic pole. The main magnetic pole includes a trailing side end surface that faces the spin torque oscillator and is tilted toward a leading side of the recording head with respect to the direction perpendicular to the recording medium, and the spin torque oscillator has layers with tilted surfaces that are substantially in parallel with the trailing side end surface.

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Номер записи: 15
06-03-2014 дата публикации

OPTICAL PICKUP AND OPTICAL DISC DEVICE

Номер: US20140068642A1
Автор: Nakao Takashi, Saito Kimihiro, Tentaku Yutaka
Принадлежит: SONY CORPORATION

There is provided an optical pickup including a light source, an objective lens configured to focus light from the light source onto one signal face of an optical disc, the optical disc including two or more signal faces, each of the signal faces having a groove formed therein, a photodetector configured to receive returning rays from the optical disc, the photodetector having a light receiving face divided into four light receiving regions by a dividing line that is substantially parallel to a track direction of the optical disc and by a dividing line that is substantially perpendicular to the track direction, and a shading unit disposed at an incident side of the photodetector and configured to block, of returning rays from a signal face other than the one signal face of the optical disc, at least a diffracted ray that is diffracted by the groove. 1. An optical pickup comprising:a light source;an objective lens configured to focus light from the light source onto one signal face of an optical disc, the optical disc including two or more signal faces, each of the signal faces having a groove formed therein;a photodetector configured to receive returning rays from the optical disc, the photodetector having a light receiving face divided into four light receiving regions by a dividing line that is substantially parallel to a track direction of the optical disc and by a dividing line that is substantially perpendicular to the track direction; anda shading unit disposed at an incident side of the photodetector and configured to block, of returning rays from a signal face other than the one signal face of the optical disc, at least a diffracted ray that is diffracted by the groove.2. The optical pickup according to claim 1 , wherein the shading unit is disposed at a position at which the diffracted ray substantially concentrates.3. The optical pickup according to claim 2 , wherein claim 2 , provided that amax is a maximum value of a radius of a 0th order ray of ...

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Номер записи: 16
07-01-2016 дата публикации

MICROMETER SCALE COMPONENTS

Номер: US20160005427A1
Автор: Liu Zongrong, Wang Lei
Принадлежит:

Micrometer scale components comprise a component body comprising an alloy of a first solder metal and a second solder metal, the alloy having a higher liquidus temperature than the second solder metal; and a base region of the structure body wetted to a substrate, wherein the component body has a molded surface profile. 1. A micrometer scale component , comprising:a component body comprising an alloy of a first solder metal and a second solder metal, the alloy having a higher liquidus temperature than the second solder metal; anda base region of the structure body wetted to a substrate,wherein the component body has a molded surface profile.2. The apparatus of claim 1 , wherein the alloy comprises a heat sink material.3. The apparatus of claim 1 , wherein the micrometer scale component comprises a catoptric structure having a catoptric face.4. The apparatus of claim 3 , wherein the catoptric face has a surface roughness less than about 0.5 microns.5. The apparatus of claim 4 , wherein the catoptric face has a parabolic profile.6. The apparatus of claim 5 , wherein the catoptric face as an area less than about 1 claim 5 ,000 μmand the base region has an area less than about 600 μm.7. The apparatus of claim 3 , wherein the component body further comprises a surface layer of a third metal claim 3 , and wherein the alloy comprises an alloy of the first solder metal claim 3 , the second solder metal claim 3 , and the third solder metal.8. The apparatus of claim 1 , wherein the first solder metal and the second solder metal comprise In claim 1 , Sn claim 1 , Ag claim 1 , Au claim 1 , Ge claim 1 , Ga claim 1 , Bi claim 1 , Cu claim 1 , or Pb. This application is a divisional of U.S. patent application Ser. No. 14/539,728, filed on Nov. 12, 2014 (Atty. Docket No. F4411.D1), which is a divisional of and claims priority to U.S. patent application Ser. No. 12/953,311 filed on Nov. 23, 2010 (Atty. Docket No. F4411), issued as U.S. Pat. No. 8,997,832, which are hereby ...

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Номер записи: 17
12-01-2017 дата публикации

DEVICES INCLUDING A NEAR FIELD TRANSDUCER (NFT), AT LEAST ONE CLADDING LAYER AND INTERLAYER THERE BETWEEN

Номер: US20170011755A1
Автор: Brons Justin Glen, Huang Xiaoyue, Kautzky Michael C., Zhao Tong
Принадлежит:

A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a carbon interlayer positioned between the NFT and the at least one cladding layer. 1. A device comprising:a near field transducer (NFT), the NFT comprising gold and at least one of Cu, Rh, Ru, Ag, Ta, Cr, Al, Zr, V, Pd, Ir, Co, W, Ti, Mg, Fe, or Mo dopant; an oxide of at least one of: V, Zr, Mg, Ca, Al, Ti, Si, Ce, Y, Ta, W, or Th; or a nitride of at least one of: Ta, Al, Ti, Si, In, Fe, Zr, Cu, W or B, and the NFT having sides, top and a bottom;at least one cladding layer adjacent the NFT; anda carbon interlayer positioned between the NFT and the at least one cladding layer.2. The device according to claim 1 , wherein the NFT has a dopant concentration in a range from 0.5% to 30%.3. The device according to claim 1 , wherein the NFT comprises gold and Rh.4. The device according to claim 1 , wherein the at least one cladding layer comprises YO claim 1 , TaO claim 1 , AlO claim 1 , SiO claim 1 , MgO claim 1 , MgF claim 1 , SiN claim 1 , SiON claim 1 , TaSiO claim 1 , or combinations thereof.5. The device according to claim 1 , wherein the carbon interlayer comprises amorphous carbon.6. The device according to claim 1 , wherein the carbon interlayer has a thickness from about 2 nm to about 15 nm.7. The device according to claim 1 , wherein the carbon interlayer is positioned on at least the sides and top of the NFT.8. The device according to claim 1 , wherein the carbon interlayer is positioned on at least the sides claim 1 , top and bottom of the NFT.9. The device according to claim 1 , wherein the carbon interlayer comprises at least some a metal from the NFT claim 1 , wherein the metal from the NFT diffused into the amorphous carbon claim 1 , carbon diffused into the NFT metaal claim 1 , or a combination thereof.10. The device according to claim 9 , wherein the NFT comprises gold and a nanoparticle oxide or nitride.11. A device comprising:an energy source;a near ...

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Номер записи: 18
15-01-2015 дата публикации

Plasmonic waveguide with an angled, elongated portion

Номер: US20150016238A1
Автор: Marcus B. Mooney, Mark Gubbins
Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus includes an input region having a high-refractive-index material and an input surface configured to receive light emitted from a laser. An output surface of the apparatus is configured to deliver energy to a recording medium. The apparatus includes a plasmonic waveguide having a first elongated portion at an angle to the input surface and configured to receive the light through the input region. In response to receiving the light, surface plasmons are excited and guided to an end of the first elongated portion. The plasmonic waveguide includes a second elongated portion coupled to the end of the first elongated portion and configured to guide the surface plasmons to the output surface.

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Номер записи: 19
14-01-2021 дата публикации

LIGHT SOURCE UNIT AND THERMALLY-ASSISTED MAGNETIC HEAD

Номер: US20210013695A1
Автор: HONDA Takashi, KAWATO Makoto, LIU Kowang, NG Kwun Pan
Принадлежит:

A light source unit for thermally-assisted magnetic head includes a substrate member having a first bonding surface; a light source assembly attached on the first bonding surface of the substrate member and having a second bonding surface; and a heater circuit assembly formed between the substrate member and the light source assembly, the heater circuit assembly having a heater formed on the substrate member and two leads connected at two ends of the heater, the lead being thicker than the heater, thereby a distance between the heater and the second bonding surface is farther than that between the lead and the second bonding surface. The light source unit can reduce mechanical stress and thermal conduction between a light source assembly and a substrate member, thereby improving the performance of the light source assembly and the heater. 1. A light source unit for thermally-assisted magnetic head , comprising:a substrate member having a first bonding surface,a light source assembly attached on the first bonding surface of the substrate member and having a second bonding surface; anda heater circuit assembly formed between the substrate member and the light source assembly, the heater circuit assembly having a heater formed on the substrate member and two leads connected at two ends of the heater, the lead being thicker than the heater, thereby a distance between the heater and the second bonding surface is farther than that between the lead and the second bonding surface.2. The light source unit according to claim 1 , wherein the first bonding surface of the substrate member has a bonding area that is bonded to the light source assembly claim 1 , and the heater is buried under the light source assembly and located within the bonding area.3. The light source unit according to claim 1 , wherein multiple layers are formed on the substrate member and comprising a base layer claim 1 , a connection pad layer claim 1 , an insulation layer claim 1 , a buffer layer and a ...

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Номер записи: 20
24-04-2014 дата публикации

Reduced Plasmon Shield-Generator Gap Structure and Process

Номер: US20140112115A1
Автор: Dayu Zhou, Hiroyuki Ito, Shigeki Tanemura, Xuhui Jin
Принадлежит: Headway Technologies Inc

Three structures, and processes for manufacturing them, that improve the performance of a TAMR feature in a magnetic write head are disclosed. This improvement is achieved by making the separation between the edge plasmon generator and the plasmon shield less than the separation between the edge plasmon generator and the optical wave-guide.

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Номер записи: 21
11-02-2016 дата публикации

Waveguide with reflective grating for localized energy intensity

Номер: US20160042753A1
Автор: Hongxing Yuan, Jinshan Li, Zhong Shi
Принадлежит: Western Digital Fremont LLC

An apparatus includes a waveguide with first and second sections, and a junction coupling the first and second waveguide sections together. The first waveguide section has a first reflective device and the second section comprising a second reflective device arranged to generate a standing wave in the waveguide with maximum energy wave intensity at a target region of the waveguide in response to an incident energy wave being provided into at least one of the waveguide sections.

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Номер записи: 22
12-02-2015 дата публикации

Reader, and reproducing apparatus and recording / reproducing apparatus

Номер: US20150043318A1
Автор: Katsumi Yoshizawa, Satoshi Sugiura, Takayuki Kasuya
Принадлежит: Pioneer Corp, Pioneer Micro Technology Corp

A reader ( 12 ) is provided with: a near-field light device ( 122 ) having (i) one or a plurality of quantum dots and (ii) an output end ( 224 ) laminated on an upper layer of the one or plurality of quantum dot layers; and a light receiving device ( 124 ) which is configured to receive light caused by near-field light formed by the near-field light device upon reproduction of record information on a recording medium. According to the reader, the information recorded by heat assisted magnetic recording can be reproduced without providing a separate magnetic circuit.

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Номер записи: 23
12-02-2015 дата публикации

OPTICAL DEVICE, MAGNETIC HEAD, MANUFACTURING METHOD, AND NEAR-FIELD LIGHT DEVICE

Номер: US20150043319A1
Автор: Kasuya Takayuki, Sugiura Satoshi
Принадлежит:

An near-field light device () is provided with: a first electrode layer () having a protruding portion (); a second electrode layer (); and a light emitting layer (), the protruding portion protrudes along a predetermined direction (Y axis direction) to be capable of extracting energy which is caused by emission of light at the light emitting layer, the predetermined direction intersects with a laminated direction (X axis direction) of the near-field light device, an edge surface of at least one portion of the projection portion is located at more outward side in the optical device than an edge surface of the second electrode layer is. 1. An optical device comprising:a first electrode layer having a protruding portion;a second electrode layer; anda light emitting layer which is sandwiched between the first electrode layer and the second electrode layer,whereinthe protruding portion protrudes along a predetermined direction to be capable of extracting energy which is caused by emission of light at the light emitting layer, wherein the predetermined direction intersects with a laminated direction along which the first electrode layer, the second electrode layer and the light emitting layer are laminated,an edge surface of at least one portion of the projection portion is located at more outward side in the optical device along the predetermined direction than an edge surface of the second electrode layer is.2. The optical device according to further comprising a facing surface which faces a desired medium along the predetermined direction claim 1 ,the edge surface of at least one portion of the projection portion is closer to the facing surface than the edge surface of the second electrode layer is.3. The optical device according to claim 1 , whereinthe protruding portion generates near-field light by extracting the energy which is caused by the emission of the light at the light emitting layer.4. A magnetic head comprising:a first electrode layer;a second electrode ...

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Номер записи: 24
08-02-2018 дата публикации

TE TO TM MODE CONVERTER AND METHOD OF MANUFACTURE

Номер: US20180040342A1
Автор: El Hallak Fadi, Goggin Aidan Dominic, Hamilton Kelly Elizabeth, McElhinney Paula Frances
Принадлежит:

An apparatus includes an input coupler configured to receive light excited by a light source. A near-field transducer (NFT) is positioned at a media-facing surface of a write head. A layered waveguide is positioned between the input coupler and the NFT and configured to receive the light output from the input coupler in a transverse electric (TE) mode and deliver the light to the NFT in a transverse magnetic (TM) mode. The layered waveguide comprises a first layer extending along a light-propagation direction. The first layer is configured to receive light from the input coupler. The first layer tapers from a first cross track width to a second cross track width where the second cross track width is narrower than the first cross track width. The layered waveguide includes a second layer that is disposed on the first layer. The second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction. The cross sectional area of the second layer is smaller proximate to the input coupler and larger proximate to the NFT. 1. A method for forming a write head , comprising:depositing a first waveguide layer;depositing a second waveguide layer adjacent to the first waveguide layer;applying a first mask to a substrate parallel surface of the second waveguide layer creating a masked portion and an exposed portion of the second waveguide layer;etching the exposed portion of the second waveguide layer;applying a second mask to the substrate parallel surface of the second waveguide layer creating masked sections and exposed sections of the first and second waveguide layers; andmilling the exposed sections of both the first and the second waveguide layers, wherein the second layer has a cross sectional area in a plane perpendicular to the light propagation direction that increases along the light propagation direction, the cross sectional area being smaller proximate to an input coupler and larger ...

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Номер записи: 25
16-02-2017 дата публикации

THERMALLY-ASSISTED MAGNETIC RECORDING HEAD INCLUDING A MAIN POLE AND A PLASMON GENERATOR

Номер: US20170047087A1
Автор: ARAKI Hironori, Ito Hiroyuki, Mamiya Hideo, Sasaki Yoshitaka, TANEMURA Shigeki, TOMITA Seiichiro
Принадлежит: HEADWAY TECHNOLOGIES, INC.

A main pole has a front end face including a first end face portion and a second end face portion. A plasmon generator has a near-field light generating surface. A surrounding layer has a first surrounding layer end face and a second surrounding layer end face located on opposite sides of the first end face portion in the track width direction. A gap film has a first gap film end face and a second gap film end face located on opposite sides of the near-field light generating surface in the track width direction. Each of the first and second gap film end faces includes a portion located between the first and second surrounding layer end faces, but does not include any portion interposed between the first surrounding layer end face and the first end face portion or between the second surrounding layer end face and the first end face portion. 1. A thermally-assisted magnetic recording head comprising:a medium facing surface configured to face a recording medium;a coil for producing a magnetic field corresponding to data to be written on the recording medium;a main pole having a front end face located in the medium facing surface;a waveguide including a core and a cladding, the core allowing light to propagate therethrough, the cladding being provided around the core;a plasmon generator having a near-field light generating surface located in the medium facing surface;a surrounding layer; anda gap film for separating the plasmon generator from the surrounding layer, whereinthe main pole is configured to pass a magnetic flux corresponding to the magnetic field produced by the coil, and to produce from the front end face a write magnetic field for use to write the data on the recording medium,the plasmon generator is configured to excite a surface plasmon on the plasmon generator based on the light propagating through the core, and to generate near-field light from the near-field light generating surface based on the surface plasmon,the front end face of the main pole ...

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Номер записи: 26
25-02-2016 дата публикации

Optical information reproduction device and optical information reproduction method

Номер: US20160055876A1
Автор: Makoto Hosaka
Принадлежит: HITACHI LTD

An optical information recording/reproduction device is capable of appropriately correcting the angle of a reference beam during data reproduction even when a wavelength deviation or an angle deviation in multiplexing and vertical directions of the reference beam occurs in a holographic memory recording medium. The optical information reproduction device has a laser light source that generates a reference beam; an image-capturing unit that detects a diffraction ray to be reproduced from the optical information recoding medium; and an optical detection unit that has at least two light-receiving surfaces and is used for detecting a diffraction ray reproduced by irradiating the reference beam on the optical information recording medium. The device also has a light-shielding unit that shields part of the diffraction ray detected by the optical detection unit; and an error signal calculation unit that generates an error signal from a detection signal outputted by the optical detection unit.

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Номер записи: 27
14-02-2019 дата публикации

DEVICES INCLUDING AT LEAST ONE MULTILAYER ADHESION LAYER

Номер: US20190051319A1
Автор: Brons Justin, Cheng Yuhang, Dimitrov Dimitar V., Zhao Tong
Принадлежит:

Devices that include a near field transducer (NFT), the NFT having at least one external surface; and at least one multilayer adhesion layer positioned on at least a portion of the at least one external surface, the multilayer adhesion layer including a first layer and a second layer, with the second layer being in contact with the portion of the at least one external surface of the NFT, the first layer including: yttrium (Y), scandium (Sc), zirconium (Zr), hafnium (Hf), silicon (Si), boron (B), tantalum (Ta), barium (Ba), aluminum (Al), titanium (Ti), niobium (Nb), calcium (Ca), beryllium (Be), strontium (Sr), magnesium (Mg), lithium (Li), or combinations thereof; and the second layer including: lanthanum (La), boron (B), lutetium (Lu), aluminum (Al), deuterium (D), cerium (Ce), uranium (U), praseodymium (Pr), yttrium (Y), silicon (Si), iridium (Ir), carbon (C), thorium (Th), scandium (Sc), titanium (Ti), vanadium (V), phosphorus (P), barium (Ba), europium (Eu), or combinations thereof. 1. A device comprising:a near field transducer (NFT), the NFT having at least one external surface; andat least one multilayer adhesion layer positioned on at least a portion of the at least one external surface, the multilayer adhesion layer comprising a first layer and a second layer, with the second layer being in contact with the portion of the at least one external surface of the NFT,the first layer comprising: yttrium (Y), scandium (Sc), zirconium (Zr), hafnium (Hf), silicon (Si), boron (B), tantalum (Ta), barium (Ba), aluminum (Al), titanium (Ti), niobium (Nb), calcium (Ca), beryllium (Be), strontium (Sr), magnesium (Mg), lithium (Li), or combinations thereof; andthe second layer comprising: lanthanum (La), boron (B), lutetium (Lu), aluminum (Al), deuterium (D), cerium (Ce), uranium (U), praseodymium (Pr), yttrium (Y), silicon (Si), iridium (Ir), carbon (C), thorium (Th), scandium (Sc), titanium (Ti), vanadium (V), phosphorus (P), barium (Ba), europium (Eu), or combinations ...

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Номер записи: 28
22-02-2018 дата публикации

DEVICES INCLUDING A DIFUSSION BARRIER LAYER

Номер: US20180053520A1
Автор: Blaber Martin, Brickner Hui, Cheng Yuhang, Duda John, Lee Tae-Woo, Sahoo Sarbeswar, Zhao Tong
Принадлежит:

Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disc, wherein the peg is at the ABS of the device;a heat sink positioned adjacent the disc of the NFT;a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; anda conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.2. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises molybdenum (Mo) claim 1 , tantalum (Ta) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , neodymium (Nd) claim 1 , holmium (Ho) claim 1 , molybdenum (Mo) claim 1 , tungsten (W) claim 1 , iridium (Ir) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , rhenium (Re) claim 1 , titanium (Ti) claim 1 , zirconium (Zr) claim 1 , nickel (Ni) claim 1 , uranium (U) claim 1 , yttrium (Y) claim 1 , vanadium (V) claim 1 , or combinations thereof.3. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , tantalum (Ta) claim 1 , zirconium (Zr) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , or combinations thereof.4. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ...

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Номер записи: 29
02-03-2017 дата публикации

METHODS OF FORMING MAGNETIC DEVICES WITH VARIABLE OVERCOATS

Номер: US20170061994A1
Автор: Buettner Daniel Richard, Cole Douglas H., Stephan Joseph Michael
Принадлежит:

Methods that include depositing a first layer over the entire surface of a structure, the structure having a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate and the magnetic writer includes a near field transducer (NFT); depositing a second layer over the entire surface of the first layer; depositing a photoresist material layer over the entire surface of the second layer, the photoresist material layer having a bottom surface in contact with the second layer and an opposing top surface; exposing the photoresist material layer to radiation through the bottom surface of the photoresist material layer via the NFT to form a first exposed region; and exposing the photoresist material layer to radiation through the top surface of the photoresist material layer to form a second exposed region. 1. A method comprising:depositing a first layer over the entire surface of a structure, the structure comprising a magnetic reader and a magnetic writer, wherein the magnetic reader and the magnetic writer are positioned adjacent to each other on a substrate and the magnetic writer comprises a near field transducer (NFT);depositing a second layer over the entire surface of the first layer;depositing a photoresist material layer over the entire surface of the second layer, the photoresist material layer having a bottom surface in contact with the second layer and an opposing top surface;exposing the photoresist material layer to radiation through the bottom surface of the photoresist material layer via the NFT to form a first exposed region; andexposing the photoresist material layer to radiation through the top surface of the photoresist material layer to form a second exposed region.2. The method according to claim 1 , wherein the NFT transmits radiation from a waveguide configured to function in combination with the NFT.3. The method according to further comprising using the first and ...

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Номер записи: 30
28-02-2019 дата публикации

Single Rh Layer Optical Field Enhancer with Pre-Focusing Structures

Номер: US20190066722A1
Автор: Maletzky Tobias, Staffaroni Matteo
Принадлежит:

A TAMR (thermally assisted magnetic recording) write head uses weakly plasmonic materials to create plasmon near field energy. The replacement of highly plasmonic materials like Au with weakly plasmonic materials like Rh avoids the thermal deformations of softer metals like Au. To maintain the performance of the head, it includes pre-focusing structures that concentrate plasmon energy by the creation of surface plasmon polaritons which are converted to more narrowly confined plasmons by excitation by a tapered waveguide. A waveguide blocker at the distal end of the waveguide enhances the formation of surface plasmon polaritons at the interface between the blocker and the distal end of the waveguide. A pair of symmetrically disposed optical side shields are formed to either side of the pole tip and a weakly plasmonic optical field enhancer further strengthens the optical field. 1. (canceled)2. A TAMR (Thermally Assisted Magnetic Recording) write head comprising:a magnetic writer structure having a tapered main write pole section emerging at a distal ABS (Air-Bearing Surface) and configured to write on a magnetic recording medium when said magnetic recording medium has been properly activated thermally by plasmon near-field energy; anda structure comprising small, weakly plasmonic elements, wherein said elements are not subject to thermal deformations and recessions from said ABS yet are an efficient source of said plasmon near-field energy when excited by pre-focused optical energy provided by a system comprising:a waveguide, having a horizontally (x-y plane) tapered dielectric waveguide core, formed adjacent to and aligned along (y-direction) said main write pole and configured for directing pre-focused optical energy at a configuration of weakly plasmonic patterned layers comprising an upper layer and a lower layer; wherein a stratified, highly plasmonic film is formed between said waveguide and said tapered main pole and is separated from said main pole by a ...

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Номер записи: 31
05-06-2014 дата публикации

OPTICAL PICKUP APPARATUS

Номер: US20140153376A1
Автор: ANZAI Joji, JEONG Kab-kyun, Kim Jae-Hyun, Kim Myoung-Seok, Park Sang-yeal, Tasaka Shuichi
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

An optical pickup apparatus which includes a light transmitting system is provided. A light source system provides the light transmitting system with light; a light receiving system includes detectors which are configured to detect light reflected from the multilayer optical disk; and a stray light controller is configured to prevent stray light from reaching the detectors. The stray light controller is disposed between the light source system and the light receiving system. The stray light controller includes a light transmitting portion through which light reflected from the multilayer optical disk and the stray light are configured to pass; a light diffraction portion is configured to diffract the light reflected from the multilayer optical disk and the stray light; and a light blocking portion configured to block the light reflected from the multilayer optical disk and the stray light. 2. The optical pickup apparatus of claim 1 , whereinthe light diffraction portion is provided on one surface of the light transmitting portion, and the light blocking portion is provided on another surface of the light transmitting portion which is opposite to the one surface of the light transmitting portion.3. The optical pickup apparatus of claim 2 , whereinthe light diffraction portion comprises linear diffraction gratings.4. The optical pickup apparatus of claim 2 , whereinthe light blocking portion is disposed in front of the light diffraction portion, and has a narrower width than that of the light diffraction portion.5. The optical pickup apparatus of claim 2 , whereineach of the plurality of detectors comprisesa main detecting portion in which the plurality of light beams reflected from the multilayer optical disk and passed through the light transmitting portion are imaged; andat least one auxiliary detecting portion in which the plurality of light reflected from the multilayer optical disk and passed through the light diffraction portion are imaged.6. The optical pickup ...

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Номер записи: 32
05-06-2014 дата публикации

Polarization rotator

Номер: US20140153861A1
Автор: Chubing Peng, Yongjun Zhao
Принадлежит: SEAGATE TECHNOLOGY LLC

A polarization rotator comprises a first waveguide configured to be coupled to an input coupler at a first end and a second waveguide, wherein the first waveguide is offset from the second waveguide and a second end of the first waveguide is coupled to a second end of the second waveguide.

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Номер записи: 33
15-03-2018 дата публикации

NEAR FIELD TRANSDUCERS (NFTS) INCLUDING BARRIER LAYER AND METHODS OF FORMING

Номер: US20180075872A1
Автор: Blaber Martin, Dimitrov Dimitar, Gong Jie, Kautzky Michael, Riemer Steve, Zhao Tong, Zhao Yongjun
Принадлежит:

Devices having an air bearing surfaces (ABS), the devices including a near field transducer (NFT) that includes a disc having a front edge; a peg, the peg having a front surface at the air bearing surface of the apparatus, an opposing back surface, a top surface that extends from the front surface to the back surface, two side surfaces that expend from the front surface to the back surface and a bottom surface that extends from the front surface to the back surface; and a barrier layer, the barrier layer separating at least the back surface of the peg from the disc and the barrier layer having a thickness from 10 nm to 50 nm. 1. A device having an air bearing surface (ABS) , the device comprising: a disc having a front edge;', 'a peg, the peg having a front surface at the air bearing surface of the apparatus, an opposing back surface, a top surface that extends from the front surface to the back surface, two side surfaces that expend from the front surface to the back surface and a bottom surface that extends from the front surface to the back surface; and', 'a barrier layer, the barrier layer separating at least the back surface of the peg from the disc and the barrier layer having a thickness from 10 nm to 50 nm., 'a near field transducer (NFT) comprising2. The device according to claim 1 , wherein the peg is in front of the front edge of the disc.3. The device according to claim 2 , wherein the barrier layer extends from 1 nm to 15 nm in front of and behind the front edge of the disc.4. The device according to claim 2 , wherein the barrier layer is entirely in front of the front edge of the disc and the surface of the barrier layer that contacts the back surface of the peg is greater than 2 nm away from the front edge of the disc.5. The device according to claim 2 , wherein the barrier layer is entirely behind the front edge of the disc and the barrier layer extends from 2 nm to 20 nm behind the front edge of the disc.6. The device according to claim 1 , wherein ...

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Номер записи: 34
12-06-2014 дата публикации

Information recording medium, information device, and method for producing information recording medium

Номер: US20140160914A1
Автор: Keiichi Matsuzaki, Noboru Yamada, Teruhiro Shiono
Принадлежит: Panasonic Corp

An information device is an information device that records information on or reproduces information from an information recording medium ( 3 ). The information device includes a light source ( 14 ) and a near-field light generating element ( 9 ) including a resonating section ( 22 ) configured such that plasmon resonance occurs between the resonating section ( 22 ) and a recording region ( 4 ). The resonating section ( 22 ) causes the plasmon resonance when emission light from the light source is irradiated on the near-field light generating element ( 9 ). A resonance enhancing film enhances the plasmon resonance between the resonating section ( 22 ) and the recording region ( 4 ). The resonating section ( 22 ) generates near-field light and irradiates the near-field light on the recording region ( 4 ) from a recording layer side.

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Номер записи: 35
24-03-2016 дата публикации

NEGATIVE-PORALIZATION SPIN-TORQUE-OSCILLATOR

Номер: US20160086623A1
Автор: Igarashi Masukazu, Nagasaka Keiichi, Okamura Susumu, Sato Masashige, SATO Yo, Shiimoto Masato
Принадлежит:

Embodiments disclosed herein generally relate to a MAMR head. The MAMR head includes an STO. The STO has a first magnetic layer, a second magnetic layer and an interlayer disposed between the first and second magnetic layers. One of the first and second magnetic layers is made of a negative polarization material while the other magnetic layer is made of a positive polarization material. As a result, the magnetizations in the first and second magnetic layers are in the same direction when in oscillation, which suppresses the partial cancellation of the magnetizations in the first and second magnetic layers and strengthens the AC magnetic field. 1. A spin torque oscillator , comprising:a first magnetic layer, wherein the first magnetic layer comprises a negative polarization material;a second magnetic layer, wherein the second magnetic layer comprises a positive polarization material;a third magnetic layer, wherein the third magnetic layer comprises a negative polarization material;a first interlayer disposed between the first magnetic layer and the second magnetic layer; anda second interlayer disposed between the second magnetic layer and the third magnetic layer.2. The spin torque oscillator of claim 1 , further comprising an underlayer and a cap layer.3. The spin torque oscillator of claim 2 , wherein the first magnetic layer is a spin polarization layer claim 2 , the second magnetic layer is a field generation layer claim 2 , and the third magnetic layer is a spin polarization layer claim 2 , and wherein the cap layer is disposed over the second third magnetic layer claim 2 , the third magnetic layer is disposed over the second interlayer claim 2 , the second interlayer is disposed over the second magnetic layer claim 2 , the second magnetic layer is disposed over the first interlayer claim 2 , the first interlayer is disposed over the first magnetic layer claim 2 , and the first magnetic layer is disposed over the underlayer.4. (canceled)5. The spin torque ...

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Номер записи: 36
29-03-2018 дата публикации

DEVICES INCLUDING METAL LAYER

Номер: US20180090159A1
Автор: Blaber Martin Giles, Boyne Andrew J., Brons Justin, Cheng Yuhang, Franzen Scott, Gong Jie, Kautzky Michael, Rejda Edwin F., Seigler Michael A., Wierman Kurt W., Yang Seung-Yeul, Zhao Tong, Zhao Yongjun
Принадлежит:

Devices having an air bearing surface (ABS) and including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg includes a rear peg portion and a peg tip, the rear peg portion and the peg tip are different materials and the peg tip includes: one or more metals; one or more nanoparticles comprising oxides, nitrides, carbides or combinations thereof; one or more conducting oxides, conducting nitrides, conducting bromides, conducting carbides, or combinations thereof; one or more semiconductors; or combinations thereof. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disc, wherein the peg has an entire length and comprises a rear peg portion and a peg tip, wherein the peg tip is from 1% to 80% of the length of the entire peg, wherein the rear peg portion and the peg tip are different materials and the peg tip comprises:one or more metals selected from: gold (Au), silver (Ag), aluminum (Al), copper (Cu), rhodium (Rh), ruthenium (Ru), iridium (Ir), niobium (Nb), tantalum (Ta), titanium (Ti), chromium (Cr), zirconium (Zr), palladium (Pd), vanadium (V), molybdenum (Mo), cobalt (Co), magnesium (Mg), iron (Fe), platinum (Pt), nickel (Ni), manganese (Mn), indium (In), scandium (Sc), yttrium (Y), gallium (Ga), hafnium (Hf), zinc (Zn), gadolinium (Gd), holmium (Ho), terbium (Tb), samarium (Sm), dysprosium (Dy), neodymium (Nd), or combinations thereof;one or more metals selected from gold (Au), silver (Ag), aluminum (Al), copper (Cu), rhodium (Rh), ruthenium (Ru), iridium (Ir), niobium (Nb), tantalum (Ta), titanium (Ti), chromium (Cr), zirconium (Zr), palladium (Pd), vanadium (V), molybdenum (Mo), cobalt (Co), magnesium (Mg), iron (Fe), platinum (Pt), nickel (Ni), manganese (Mn), indium (In), scandium (Sc), yttrium (Y), gallium (Ga), hafnium (Hf), zinc (Zn), gadolinium (Gd), holmium (Ho), terbium (Tb), samarium (Sm), dysprosium (Dy), neodymium (Nd), or ...

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Номер записи: 37
29-03-2018 дата публикации

DEVICES INCLUDING A DIFFUSION BARRIER LAYER

Номер: US20180090160A1
Автор: Brickner Hui, Cheng Yuhang, Duda John, Franzen Scott, Kautzky Michael, Sahoo Sarbeswar, Seigler Michael, Wessel James, Zhao Tong
Принадлежит:

Devices that include a write pole; a near field transducer (NFT) that includes a peg and a disk, wherein the peg is at the ABS of the device; and a diffusion barrier layer positioned between the write pole and the peg of the NFT, the diffusion barrier layer including metals, nitrides, oxides, carbides, silicides, or amorphous material. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disk, wherein the peg is at the ABS of the device; anda diffusion barrier layer positioned between the write pole and the peg of the NFT and in direct physical contact with at least the write pole and the disk, the diffusion barrier layer having a thickness from about 0.1 nm to about 50 nm and comprising one or more materials selected from:molybdenum (Mo), niobium (Nb), nickel (Ni), hafnium (Hf), neodymium (Nd), holmium (Ho), zirconium (Zr), yttrium (Y), uranium (U), iridium (Ir), silicon (Si), tantalum (Ta), tungsten (W), titanium (Ti), rhodium (Rh), and ruthenium (Ru);molybdenum (Mo), niobium (Nb), nickel (Ni), hafnium (Hf), neodymium (Nd), holmium (Ho), zirconium (Zr), yttrium (Y), uranium (U), iridium (Ir), silicon (Si), tantalum (Ta), tungsten (W), titanium (Ti), rhodium (Rh), and ruthenium (Ru);aluminum nitride (AlN), boron nitride (BN), zirconium nitride (ZrN), chromium nitride (CrN), titanium nitride (TiN), hafnium nitride (HfN), vanadium nitride (VN); titanium aluminum nitride (TiAlN), and titanium silicon nitride (TiSiN);aluminum oxide (AlO), magnesium oxide (MgO), beryllium oxide (BeO), titanium oxide (TiO), tantalum oxide (TaO), niobium oxide (NbO), vanadium oxide (VO), tungsten oxide (WO), zirconium oxide (ZrO), hafnium oxide (HfO), silicon oxide (SiO), and chromium oxide (CrO);titanium carbide (TiC), zirconium carbide (ZrC), niobium carbide (NbC), vanadium carbide (VC), hafnium carbide (HfC), silicon carbide (SiC), chromium carbide (CrC), and tantalum carbide (TaC) and tungsten carbide ...

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Номер записи: 38
21-03-2019 дата публикации

NEAR-FIELD TRANSDUCER WITH RECESSED REGION

Номер: US20190088273A1
Автор: Chen Weibin, Scholz Werner
Принадлежит:

A near-field transducer is situated at or proximate an air bearing surface of the apparatus and configured to facilitate heat-assisted magnetic recording on a medium. The near-field transducer includes an enlarged region comprising plasmonic material and having a first end proximate the air bearing surface. The near-field transducer also includes a disk region adjacent the enlarged region and having a first end proximate the air bearing surface. The disk region comprises plasmonic material. A peg region extends from the first end of the disk region and terminates at or proximate the air bearing surface. The near-field transducer further includes a region recessed with respect to the peg region. The recessed region is located between the peg region and the first end of the enlarged region. 1. An apparatus , comprising: an enlarged region comprising plasmonic material and having a first end proximate the air bearing surface and a second end opposing the first end;', 'a disk region adjacent the enlarged region and having a first end proximate the air bearing surface and a second end opposing the first end, the first end of the disk region comprising a first end portion having a terminus facing the air bearing surface and a projection extending under and beyond the first end portion, the disk region comprising plasmonic material;', 'a peg region extending from the projection of the first end of the disk region and terminating at or proximate the air bearing surface; and', 'a region recessed with respect to the peg region, the recessed region comprising an end surface located between the peg region and the first end of the enlarged region, wherein the first end of the enlarged region is substantially coextensive with respect to the end surface of the recessed region., 'a near-field transducer situated at or proximate an air bearing surface of the apparatus and configured to facilitate heat-assisted magnetic recording on a medium comprising2. The apparatus of claim 1 , ...

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Номер записи: 39
21-03-2019 дата публикации

MATERIALS FOR NEAR FIELD TRANSDUCERS AND NEAR FIELD TRANSDUCERS CONTAINING SAME

Номер: US20190088280A1
Автор: Jayashankar Sethuraman, Kautzky Michael C.
Принадлежит:

A method of forming a near field transducer (NFT) layer, the method including depositing a film of a primary element, the film having a film thickness and a film expanse; and implanting at least one secondary element into the primary element, wherein the NFT layer includes the film of the primary element doped with the at least one secondary element. 1. A method of forming a near field transducer (NFT) layer , the method comprising:depositing a film of a primary element, the film having a film thickness and a film expanse; andimplanting at least one secondary element into the primary element,wherein the NFT layer comprises the film of the primary element doped with the at least one secondary element.2. The method according to claim 1 , wherein the at least one secondary element is implanted using beam line implanting claim 1 , or plasma immersion implanting.3. The method according to claim 1 , wherein the concentration of the at least one secondary element is not constant across the thickness of the film4. The method according to claim 1 , wherein the concentration of the at least one secondary element is not constant across the expanse of the film.5. The method according to claim 1 , wherein the at least one secondary element is implanted at more than one energy.6. The method according to further comprising annealing after implanting the at least one secondary element.7. The method according to further comprising depositing a metal or dielectric layer on the implanted film before annealing.8. The method according to further comprising implanting at least one secondary element after annealing.9. The method according to further comprising patterning the NFT layer into a NFT.10. The method according to further comprising depositing a metal or dielectric layer on the film of primary element before implanting the at least one secondary element.11. A method of forming a peg of a near field transducer (NFT) claim 1 , the method comprising:depositing a primary element to ...

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Номер записи: 40
07-04-2016 дата публикации

METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY

Номер: US20160099013A1
Автор: LI Yunfei, SUN HAI, Wan Dujiang, Yi Ge, ZHAO Lijie
Принадлежит:

A method for making an interferometric taper waveguide (I-TWG) with high critical dimension uniformity and small line edge roughness for a heat assisted magnetic recording (HAMR) head, wherein the method includes creating an I-TWG film stack with two hard mask layers on top of an I-TWG core layer sandwiched between two cladding layers, defining a photoresist pattern over the I-TWG film stack using deep ultraviolet lithography, transferring the pattern to the first hard mask layer using reactive ion etching (RIE), forming a temporary I-TWG pattern on the second hard mask layer using RIE, transferring the temporary pattern to the I-TWG core using RIE, refilling the cladding layer, and planarizing using chemical mechanical planarization (CMP). 1. A process for manufacturing a waveguide for magnetic recording media , the process comprising:depositing a film stack, the film stack comprising a first hard mask layer, a second hard mask layer, a first cladding layer, a core layer, and a second cladding layer;defining a first pattern in a photoresist layer;transferring the first pattern to the first hard mask layer;removing the photoresist layer;forming a second pattern in the second hard mask layer patterned from the first pattern in the first hard mask layer;transferring the second pattern to the core layer;planarizing a top surface of the waveguide; andintegrating the waveguide with magnetic recording media components.2. The process of wherein the core layer is deposited on the second cladding layer claim 1 , the first cladding layer is deposited on the core layer claim 1 , the second hard mask layer is deposited on the first cladding layer claim 1 , and the first hard mask layer is deposited on the second hard mask layer.3. The process of wherein the first hard mask layer comprises TaOor Ta claim 1 , the second hard mask layer comprises Cr or Ru claim 1 , the first cladding layer comprises SiO claim 1 , the core layer comprises TaO claim 1 , and the second cladding layer ...

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Номер записи: 41
26-06-2014 дата публикации

Mamr head adapted for high speed switching

Номер: US20140177092A1
Автор: Hiroyuki Katada, Masato Shiimoto
Принадлежит: HGST NETHERLANDS BV

A microwave-assisted magnetic recording (MAMR) head according to one embodiment includes a main magnetic pole adapted to generate a writing magnetic field when current is applied to a write coil; a trailing shield positioned, at an air bearing surface (ABS), in a trailing direction from the main magnetic pole; and a field generation layer (FGL) positioned, at the ABS, between the main magnetic pole and the trailing shield, wherein either a portion of the main magnetic pole closer to the FGL or a portion of the trailing shield closer to the FGL is adapted to act as a spin polarization layer.

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Номер записи: 42
19-03-2020 дата публикации

SPLIT CONTACT SENSOR FOR A HEAT-ASSISTED MAGNETIC RECORDING SLIDER

Номер: US20200090686A1
Автор: Anaya-Dufresne Manuel Charles, Hutchinson Erik Jon, Macken Declan
Принадлежит:

An apparatus comprises a slider having an air bearing surface (ABS), a leading edge, and a trailing edge opposing the leading edge. A writer having a write pole is situated at or near the ABS. A near-field transducer (NFT) is situated at or near the ABS and between the write pole and the leading edge of the slider. An optical waveguide is configured to couple light from a laser source to the NFT. A contact sensor is situated between the write pole and the trailing edge. The contact sensor comprises a first ABS section situated at or near the ABS, a second 1. An apparatus , comprising:a slider comprising an air bearing surface (ABS), a leading edge, and a trailing edge opposing the leading edge;a writer having a write pole situated at or near the ABS;a near-field transducer (NFT) situated at or near the ABS and between the write pole and the leading edge of the slider,an optical waveguide configured to couple light from a laser source to the NFT;a contaminant buildup region at and near the NFT and the write pole; anda contact sensor situated between the write pole and the trailing edge, at least a portion of the contact sensor situated at or near the ABS and comprising a gap sufficient in size to accommodate a width of the contaminant buildup region.2. The apparatus of claim 1 , wherein:the portion of the contact sensor comprises a first ABS section and a second ABS section;the gap is defined between the first and second ABS sections; anda structural element of the slider is disposed in the gap.3. The apparatus of claim 2 , wherein the structural element comprises a magnetic structure of the writer.4. The apparatus of claim 1 , wherein the contact sensor comprises a distal section extending away from the ABS and connected to the portion of the contact sensor.5. The apparatus of claim 4 , wherein:a structural element of the slider is disposed in the gap; andthe distal section of the contact sensor wraps at least partially around the structural element.6. The apparatus ...

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Номер записи: 43
05-04-2018 дата публикации

OPTICAL MEDIUM REPRODUCING DEVICE AND OPTICAL MEDIUM REPRODUCING METHOD

Номер: US20180096703A1
Автор: Ando Nobuhiko, Nishi Noriaki, Saito Kimihiro, Shiraishi Junya
Принадлежит: SONY CORPORATION

There is provided an optical medium reproducing device configured to optically reproduce an optical medium including a plurality of tracks formed, the optical medium reproducing device including: an optical filter configured to receive an incident returned light beam from the optical medium, and to spatially and optically form a plurality of signals having different bands in a tangential direction and a radial direction; an arithmetic unit configured to operate the plurality of first signals formed by the optical filter so as to form a plurality of channels of second signals; and an electrical filter configured to individually receive the second signals, and to perform processing to the second signals so as to acquire a reproduced signal. 1. An optical medium reproducing device configured to optically reproduce an optical medium including a plurality of tracks , the optical medium reproducing device comprising:a light source configured to emit a laser beam;an objective lens configured to irradiate the optical medium with the laser beam;an optical filter configured to receive an incident returned light beam from the optical medium, and to spatially and optically divide the incident returned light beam into a plurality of regions including a plurality of first signals having different bands in a linear density direction and a track density direction with parting lines extending in a tangential direction and a radial direction;an arithmetic unit configured to operate the plurality of first signals formed by the optical filter so as to form a plurality of channels of second signals; andan electrical filter configured to individually receive the second signals, and to perform processing to the second signals so as to acquire a reproduced signal,wherein the electrical filter has a filter characteristic including different amplitude-frequency characteristics and/or phase-frequency characteristics individually with respect to the plurality of signals individually generated ...

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Номер записи: 44
28-03-2019 дата публикации

Magnetic Recording Method

Номер: US20190096435A1
Автор: Gao Kaizhong
Принадлежит:

A magnetic recording method, system and apparatus are described to increasing areal density capability (ADC) for a data storage system, where in different data tracks were written with different write configurations or with different writers in a particular way that is optimized to improve areal density for a data storage device. In an aspect, the data tracks were labeled as bottom, middle or top tracks, the write order follows in a particular way among different tracks, middle and top tracks partially trim the previously written track from one side. The distance between neighboring tracks, or the percentage of track trimmed, depend on the labels they have and the drive architecture used, are different. The particular write order can be in sequential or can have a certain level of randomness as set by the drive. The write order for each operation depend on the label determined by the drive for a given drive capacity requirement. For the apparatus to enable such approach, additional alignment condition between readers, writer, heater and temperature sensor are also optimized to improve performance, areal density and reliability. 1. A blocked magnetic recording method with the recorded data on a magnetic media , where the data tracks can be labeled as top , middle and bottom tracks , and in the write process , the bottom track is written before middle and top tracks next to it; the middle tracks are written , partially trim the previously written tracks from one side , before the top track next to the middle tracks.2. The method to achieve blocked magnetic recording of claim 1 , where in the middle tracks close to the bottom tracks is written before the middle tracks away from the bottom tracks.3. The method to achieve blocked magnetic recording of claim 1 , where in the top tracks and the bottom tracks have different track width as compare to the middle tracks.4. The method to achieve blocked magnetic recording of claim 3 , where in the different write width is ...

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Номер записи: 45
07-05-2015 дата публикации

METHOD AND APPARATUS FOR MAGNETIC RECORDING HEAD HAVING A WAVEGUIDE

Номер: US20150122772A1
Автор: Clinton Thomas William, Patel Kanaiyalal Chaturdas, Rawat Vijay Prakash Singh, Zhang Sue Siyang
Принадлежит: HGST NETHERLANDS B.V.

A method of forming a wave guide for a heat assisted magnetic recording slider of a disk drive includes depositing a layer of waveguide material onto a substrate, and depositing a layer of a hard mask material onto the waveguide material. The method then includes depositing a layer of photoresist onto the hard mask material, and exposing the photoresist to produce a hard mask pattern that includes a waveguide pattern. The method also includes stripping the photoresist material leaving the hard mask pattern having a first line edge roughness. The method also includes removing the waveguide material not covered by the hard mask, the waveguide having sidewalls which having a line edge roughness which is substantially equal to the first line edge roughness. Also disclosed is an apparatus for accomplishing the method. 1. A method of forming a wave guide for a heat assisted magnetic recording slider of a disk drive , comprising:depositing a layer of waveguide material onto a substrate;depositing a layer of a hard mask material onto the waveguide material;depositing a layer of photoresist onto the hard mask material;exposing the photoresist to produce a hard mask pattern that includes a waveguide pattern;stripping the photoresist material leaving the hard mask pattern having a first line edge roughness ; andremoving the waveguide material not covered by the hard mask pattern to form a waveguide having sidewalls which having a second line edge roughness which is substantially the same as the first line edge roughness associated with the hard mask pattern.2. The method of claim 1 , wherein the hard mask material is amorphous.3. The method of claim 2 , wherein the hard mask material is AlO.4. The method of claim 1 , wherein the hard mask material is AlO.5. The method of claim 1 , wherein the method further comprises removing the hard mask material.6. The method of claim 5 , wherein the method further comprises optically cladding the waveguide material.7. The method of claim 1 ...

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Номер записи: 46
27-04-2017 дата публикации

OPTICAL MEDIUM REPRODUCTION APPARATUS AND OPTICAL MEDIUM REPRODUCTION METHOD

Номер: US20170117011A1
Автор: Ando Nobuhiko, Nishi Noriaki, Saito Kimihiro, Shiraishi Junya, Tentaku Yutaka
Принадлежит: SONY CORPORATION

The present disclosure relates to a reproduction apparatus. The reproduction apparatus may comprise an optical filter and electric filters. The optical filter may be configured to provide electrical signals corresponding to regions of an optical beam returning from an optical medium, the optical beam being incident on the optical filter, the regions of the optical beam corresponding to different bands in a line density direction and/or a track density direction. The electric filters may be configured to provide outputs based, at least in part, on the electrical signals provided by the optical filter, wherein the reproduction apparatus is configured to obtain a reproduced signal by combining the outputs of the electric filters. 1. A reproduction apparatus for optically reproducing an optical medium formed with a plurality of tracks on which binary data has been recorded by mark portions and space portions having different lengths , comprising:a light source configured to output a laser beam;an object lens configured to converge the laser beam onto the optical medium;an optical filter configured to separate a change of brightness/darkness caused, on a pupil plane of the reflected laser beam returning from the optical medium, by a structure of the plurality of tracks and the data recorded by the mark portions and the space portions having the different lengths on the tracks into a plurality of signals having different spatial optical frequencies of periodic structures in a direction along the tracks of the mark portions and the space portions on the plurality of tracks including a track to be reproduced and/or a direction which perpendicularly crosses the tracks;a plurality of electric filters to which the plurality of signals formed by the optical filter are supplied, respectively; anda binarization unit configured to obtain binary data by performing a binarization processing on an equalized signal obtained by computing outputs from the plurality of electric filters, ...

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Номер записи: 47
05-05-2016 дата публикации

NEAR FIELD TRANSDUCER ANNEAL FOR HEAT ASSISTED MAGNETIC RECORDING

Номер: US20160125898A1
Автор: REN Shen, Schreck Erhard, Staffaroni Matteo, Stipe Barry C.
Принадлежит: HGST NETHERLANDS B.V.

A method for annealing a metal antenna of a near field optical transducer of a magnetic write element without inadvertently heat damaging the read element. A heating element is placed within a write head build in a cerf region outside of the active area of the read and write heads. A layer of thermally conductive, electrically insulating material is formed over the heating element to separate the heating element from the antenna. The thermally conductive, electrically insulating layer is preferably in contact with the antenna. A current can be applied to the heating element to heat the antenna to a temperature that is at or above the operating temperature of the optical transducer. After annealing, the heater element can be removed by the lapping process that is used to define the media facing surface of the head. 1. A magnetic recording head , comprising:a write element including a magnetic write pole and a near field optical transducer having a metal antenna located at a media facing surface and having a leading edge surface at a side opposite the write pole; anda layer of thermally conductive, electrically insulating material having a thermal conductivity greater than that of alumina contacting the leading edge surface of the metal antenna.2. (canceled)3. The magnetic recording head as in claim 1 , wherein the thermally conductive claim 1 , electrically insulating material comprises SiC.4. The magnetic recording head as in claim 1 , the magnetic recording head further comprising a waveguide material that is at least partially surrounded by a cladding material connected with the near field optical transducer claim 1 , and wherein the layer of thermally conductive claim 1 , electrically insulating material is in contact with a portion of the cladding material.5. (canceled)6. The magnetic recording head as in claim 1 , wherein the metal antenna comprises Au.7. The magnetic recording head as in claim 1 , wherein the metal antenna comprises an Au alloy.8. (canceled)9. ...

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Номер записи: 48
14-05-2015 дата публикации

MAGNETIC DEVICES WITH OVERCOATS

Номер: US20150131416A1
Автор: Huang Xiaoyue, Kautzky Michael C., Riemer Steve, Yang Seung-Yeul
Принадлежит:

A magnetic device including a magnetic writer; and an overcoat positioned over at least the magnetic writer, the overcoat including oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof 1. A magnetic device comprising:a near field transducer (NFT); andan overcoat positioned over at least a portion of the NFT, the overcoat comprising an inner layer in contact with the NFT and an outer layer in contact with the inner layer, wherein the inner layer comprises oxides of yttrium, oxides of scandium, oxides of lanthanoids, oxides of actionoids, oxides of zinc, or combinations thereof2. The magnetic device according to claim 1 , wherein the inner layer comprises yttrium oxide (YO) claim 1 , scandium oxide (ScO) claim 1 , oxides of lanthanoids: lanthanum oxide (LaO) claim 1 , cerium oxide (CeO claim 1 , or CeO) claim 1 , praseodymium oxide (PrO) claim 1 , neodymium oxide (NdO) claim 1 , promethium oxide (PmO) claim 1 , samarium oxide (SmO) claim 1 , europium oxide (EuO) claim 1 , gadolinium oxide (GdO) claim 1 , terbium oxide (TbO claim 1 , TbO claim 1 , TbO claim 1 , or TbO) claim 1 , dysprosium oxide (DyO) claim 1 , holmium oxide (HoO) claim 1 , erbium oxide (ErO) claim 1 , thulium oxide (TmO) claim 1 , ytterbium oxide (YbO) claim 1 , and lutetium oxide (LuO) claim 1 , oxides of actinoids: actinium oxide (AcO) claim 1 , thorium oxide (ThOor THO) claim 1 , protactinium oxide (PaO claim 1 , PaO claim 1 , or PaO) claim 1 , uranium oxide (UO claim 1 , UO claim 1 , UO claim 1 , UO claim 1 , or UO.2HO) claim 1 , neptunium oxide (NpO claim 1 , NpO claim 1 , or NpO) claim 1 , plutonium oxide (PuOor PuO) claim 1 , americium oxide (AmO claim 1 , AmO claim 1 , or AmO) claim 1 , curium oxide (CmO claim 1 , CmO claim 1 , or CmO) claim 1 , berkelium oxide (BkO claim 1 , or BkO) claim 1 , californium oxide (CfOor CfO) claim 1 , einsteinium oxide (EsO) claim 1 , fermium oxide (FmO claim 1 , or FmO) claim 1 , mendelevium ...

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Номер записи: 49
25-08-2022 дата публикации

RADIATION IMAGE READING DEVICE

Номер: US20220270646A1
Автор: MIYAMOTO Yuichi, Takasaka Masaomi
Принадлежит: HAMAMATSU PHOTONICS K.K.

A radiation image reading device includes: a light scanning unit; a light detection unit. Each of a transmittance when the excitation light reflected from the surface of the recording medium is transmitted through the optical filter and a transmittance when the signal light emitted from the surface of the recording medium at an angle larger than a predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter is smaller than a transmittance when the signal light emitted from the surface of the recording medium at an angle smaller than the predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter. 1. A radiation image reading device comprising:a light scanning unit configured to scan excitation light along a scan line with respect to a surface of a recording medium having a radiation image recorded thereon; anda light detection unit configured to detect signal light emitted from the surface of the recording medium by the scanning of the excitation light within a detection surface including the scan line and intersecting the surface of the recording medium; andwherein the light detection unit is a multi-pixel photon counter including a plurality of photodetector elements arranged along a direction parallel to the scan line, andwherein electric signals output from the plurality of photodetector elements are added and are output from the light detection unit.2. The radiation image reading device according to claim 1 ,wherein, within the detection surface, a width of a detection region of the signal light is longer than a width of a scan region of the excitation light in the surface of the recording medium.3. The radiation image reading device according to claim 1 , further comprising:an optical element is disposed between the light detection unit and the surface of the recording medium, and ...

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Номер записи: 50
12-05-2016 дата публикации

DEVICES INCLUDING A MULTILAYER GAS BARRIER LAYER

Номер: US20160133278A1
Автор: Cheng Yuhang, Franzen Scott, Seigler Michael, Wierman Kurt W.
Принадлежит:

Devices that include a near field transducer (NFT); a multilayer gas barrier layer positioned on at least a portion of the NFT, the multilayer gas barrier layer including at least a first and a second sublayer, where the second gas barrier sublayer is positioned on the first gas barrier sublayer, the first gas barrier sublayer is positioned adjacent the NFT and the second gas barrier sublayer is positioned adjacent the wear resistant layer, the first and second sublayers independently have thicknesses from 0.01 nm to 5 nm; and a wear resistance layer positioned on at least a portion of the gas barrier layer. 1. A device comprising:a near field transducer (NFT); the multilayer gas barrier layer comprising at least a first and a second sublayer, where the second gas barrier sublayer is positioned on the first gas barrier sublayer, the first gas barrier sublayer is positioned adjacent the NFT and the second gas barrier sublayer is positioned adjacent the wear resistant layer, the first and second sublayers independently have thicknesses from 0.01 nm to 5 nm; and', 'a wear resistance layer positioned on at least a portion of the gas barrier layer., 'a multilayer gas barrier layer positioned on at least a portion of the NFT,'}2. The device according to claim 1 , wherein the first and second sublayers are made of the same material.3. The device according to claim 1 , wherein the first and second sublayers are made of different materials.4. The device according to claim 1 , wherein the first and second sublayers independently comprise oxides claim 1 , nitrides claim 1 , carbides claim 1 , silicides claim 1 , borides claim 1 , fluorides claim 1 , metals claim 1 , or combinations thereof.5. The device according to claim 1 , wherein the first and second sublayers independently comprise tantalum oxide (TaO) claim 1 , chromium oxide (CrO) claim 1 , or combinations thereof.6. The device according to claim 1 , wherein the first and second sublayers independently comprise titanium ...

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Номер записи: 51
12-05-2016 дата публикации

DEVICES INCLUDING A DIFFUSION BARRIER LAYER

Номер: US20160133280A1
Автор: Brickner Hui, Cheng Yuhang, Duda John, Franzen Scott, Kautzky Michael, Sahoo Sarbeswar, Seigler Michael, Wessel James, Zhao Tong
Принадлежит:

Devices that include a write pole; a near field transducer (NFT) that includes a peg and a disk, wherein the peg is at the ABS of the device; and a diffusion barrier layer positioned between the write pole and the peg of the NFT, the diffusion barrier layer including metals, nitrides, oxides, carbides, silicides, or amorphous material. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disk, wherein the peg is at the ABS of the device; anda diffusion barrier layer positioned between the write pole and the peg of the NFT, the diffusion barrier layer having a thickness from about 0.1 nm to about 50 nm and comprising one or more materials selected from:molybdenum (Mo), niobium (Nb), nickel (Ni), hafnium (Hf), neodymium (Nd), holmium (Ho), zirconium (Zr), yttrium (Y), uranium (U), iridium (Ir), silicon (Si), tantalum (Ta), tungsten (W), titanium (Ti), rhodium (Rh), and ruthenium (Ru);molybdenum (Mo), niobium (Nb), nickel (Ni), hafnium (Hf), neodymium (Nd), holmium (Ho), zirconium (Zr), yttrium (Y), uranium (U), iridium (Ir), silicon (Si), tantalum (Ta), tungsten (W), titanium (Ti), rhodium (Rh), and ruthenium (Ru);aluminum nitride (AlN), boron nitride (BN), zirconium nitride (ZrN), chromium nitride (CrN), titanium nitride (TiN), hafnium nitride (HfN), vanadium nitride (VN); titanium aluminum nitride (TiAlN), and titanium silicon nitride (TiSiN);aluminum oxide (AlO), magnesium oxide (MgO), beryllium oxide (BeO), titanium oxide (TiO), tantalum oxide (TaO), niobium oxide (NbO), vanadium oxide (VO), tungsten oxide (WO), zirconium oxide (ZrO), hafnium oxide (HfO), silicon oxide (SiO), and chromium oxide (CrO);titanium carbide (TiC), zirconium carbide (ZrC), niobium carbide (NbC), vanadium carbide (VC), hafnium carbide (HfC), silicon carbide (SiC), chromium carbide (CrC), and tantalum carbide (TaC) and tungsten carbide (WC); andamorphous material.2. The device according to further ...

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Номер записи: 52
10-05-2018 дата публикации

DEVICES INCLUDING A NEAR FIELD TRANSDUCER (NFT), AT LEAST ONE CLADDING LAYER AND INTERLAYER THERE BETWEEN

Номер: US20180130486A1
Автор: Brons Justin Glen, Huang Xiaoyue, Kautzky Michael C., Zhao Tong
Принадлежит:

A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a carbon interlayer positioned between the NFT and the at least one cladding layer. 1. A device comprising:a near field transducer (NFT);at least one cladding layer adjacent the NFT; anda carbon interlayer positioned between the NFT and the at least one cladding layer.2. The device according to claim 1 , wherein the NFT comprises gold (Au) claim 1 , gold (Au) doped with another material claim 1 , silver (Ag) claim 1 , silver (Ag) doped with another material claim 1 , copper (Cu) claim 1 , or aluminum (Al).3. The device according to claim 1 , wherein the NFT comprises gold.4. The device according to claim 1 , wherein the at least one cladding layer comprises YO claim 1 , TaO claim 1 , AlO claim 1 , SiO claim 1 , MgO claim 1 , MgF claim 1 , SiN claim 1 , SiON claim 1 , TaSiO claim 1 , or combinations thereof.5. The device according to claim 1 , wherein the carbon interlayer comprises amorphous carbon.6. The device according to claim 1 , wherein the carbon interlayer has a thickness from about 2 nm to about 15 nm.7. The device according to claim 1 , wherein the carbon interlayer is positioned on at least the sides and top of the NFT.8. The device according to claim 1 , wherein the carbon interlayer is positioned on at least the sides claim 1 , top and bottom of the NFT.9. The device according to claim 1 , wherein the carbon interlayer comprises at least some metal from the NFT.10. The device according to claim 9 , wherein the metal from the NFT diffused into the amorphous carbon claim 9 , carbon diffused into the NFT metal claim 9 , or a combination thereof.11. A device comprising:an energy source;a near field transducer (NFT) configured to receive energy from the energy source;at least one cladding layer adjacent the NFT; anda carbon interlayer positioned between the NFT and the at least one cladding layer.12. The device according to claim 11 , wherein the carbon ...

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Номер записи: 53
28-05-2015 дата публикации

INTERLAYER FOR DEVICE INCLUDING NFT AND CLADDING LAYERS

Номер: US20150146508A1
Автор: Huang Xiaoyue, Jayashankar Jay, Kautzky Michael Christopher, Seigler Michael Allen, Zhao Tong, Zhao Yongjun
Принадлежит:

A device that includes a near field transducer (NFT); at least one cladding layer adjacent the NFT; and a discontinuous metal layer positioned between the NFT and the at least one cladding layer. 1. A device comprising:a near field transducer (NFT);at least one cladding layer adjacent the NFT; anda discontinuous metal layer positioned between the NFT and the at least one cladding layer.2. The device according to claim 1 , wherein the NFT comprises gold (Au) claim 1 , gold (Au) doped with another material claim 1 , silver (Ag) claim 1 , silver (Ag) doped with another material claim 1 , copper (Cu) claim 1 , or aluminum (Al).3. The device according to claim 1 , wherein the NFT comprises gold.4. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 2.5 Å to about 50 Å.5. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 30 Å.6. The device according to claim 1 , wherein the discontinuous metal layer has an average thickness of from about 5 Å to about 20 Å.7. The device according to claim 1 , wherein the discontinuous metal layer comprises an early 3d transition metals having large populations of unfilled states at the Fermi level8. The device according to claim 1 , wherein the discontinuous metal layer comprises a material selected from: Zr claim 1 , Ti claim 1 , Y claim 1 , Sc claim 1 , Al claim 1 , Ru claim 1 , V claim 1 , Si claim 1 , Ge claim 1 , Ta claim 1 , and Sn.9. The device according to claim 1 , wherein the discontinuous metal layer comprises Zr.10. A device comprising:an energy source;a near field transducer (NFT) configured to receive energy from the energy source;at least one cladding layer adjacent the NFT; anda discontinuous metal layer positioned between the NFT and the at least one cladding layer.11. The device according to claim 10 , wherein the energy source comprises a laser.12. The device according to claim 10 , wherein ...

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Номер записи: 54
24-05-2018 дата публикации

DEVICES INCLUDING A NEAR FIELD TRANSDUCER (NFT) INCLUDING PEG AND DISC FROM DIFFERENT MATERIALS

Номер: US20180144765A1
Автор: Blaber Martin, Brons Justin, Cheng Yuhang, Duda John C., Kautzky Michael C., Seigler Michael A., Zhao Tong
Принадлежит:

Devices that have an air bearing surface (ABS), the device includes a near field transducer (NFT) that includes a disc configured to convert photons incident thereon into plasmons; and a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium, wherein the disc includes a disc material that includes gold or an alloy thereof and the peg includes a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold. 1. A device having an air bearing surface (ABS) , the device comprising: a disc configured to convert photons incident thereon into plasmons; and', 'a peg configured to couple plasmons coupled from the disc into an adjacent magnetic storage medium,', 'wherein the disc comprises a disc material comprising gold or a gold alloy and the peg comprises a peg material, wherein the disc material is different from the peg material and wherein the peg material has a real part of the permittivity that is not greater than that of gold., 'a near field transducer (NFT) comprising2. The device according to claim 1 , wherein the peg comprises rhodium (Rh) claim 1 , aluminum (Al) claim 1 , iridium (Ir) claim 1 , silver (Ag) claim 1 , copper (Cu) claim 1 , palladium (Pd) claim 1 , platinum (Pt) claim 1 , alloys thereof claim 1 , or combinations thereof.3. The device according to claim 1 , wherein the peg comprises rhodium (Rh) claim 1 , iridium (Ir) claim 1 , or combinations thereof.4. The device according to claim 1 , wherein the peg comprises rhodium (Rh).5. The device according to further comprising a heat sink adjacent the peg claim 1 , the heat sink comprising aluminum (Al) claim 1 , antimony (Sb) claim 1 , bismuth (Bi) claim 1 , chromium (Cr) claim 1 , cobalt (Co) claim 1 , copper (Cu) claim 1 , erbium (Er) claim 1 , gadolinium (Gd) claim 1 , gallium (Ga) claim 1 , gold (Au) claim 1 , hafnium (Hf) claim 1 , indium (In) ...

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Номер записи: 55
07-05-2020 дата публикации

THERMALLY ASSISTED MAGNETIC RECORDING HEAD AND THERMALLY ASSISTED MAGNETIC RECORDING DISK DRIVE

Номер: US20200143827A1
Автор: CHEN Shi Xiong, FUJII Ryuji, Guo Wen Rong, Huang Jian hui, Huang Lin, NISHIJIMA Natsuo, QI Bin
Принадлежит:

A thermally assisted magnetic recording head and a thermally assisted magnetic recording disk drive are disclosed. The thermally assisted magnetic recording head includes a slider body, a laser substrate, a laser and a magnetic head, wherein the laser substrate is provided on the slider body, the laser is provided on the laser substrate, and the magnetic head is provided at a front end of the slider body. The magnetic head includes an optical waveguide facing the laser. The angle between a light incident surface of the optical waveguide and an incident direction of a laser light incident on the optical waveguide is less than 90 degrees. The thermally assisted magnetic recording disk drive includes a plurality of magnetic disks and a magnetic head suspending frame. A front end of the magnetic head suspending frame is provided with the thermally assisted magnetic recording heads mentioned above. 1. A thermally assisted magnetic recording head , comprising a slider body , a laser substrate , a laser and a magnetic head , wherein the laser substrate is provided on the slider body , the laser is provided on the laser substrate , the magnetic head is provided at a front end of the slider body , the magnetic head comprises an optical waveguide facing the laser , and an angle between a tilted light incident surface of the optical waveguide and an incident direction of a laser light directly incident on the optical waveguide is less than 90 degrees.2. The thermally assisted magnetic recording head according to claim 1 , wherein the angle between the light incident surface and the incident direction is 45˜87 degrees.3. The thermally assisted magnetic recording head according to claim 2 , wherein the angle between the light incident surface and the incident direction is 82 degrees.4. The thermally assisted magnetic recording head according to claim 1 , wherein the light incident surface is formed by ion beam etching.5. The thermally assisted magnetic recording head according ...

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Номер записи: 56
09-06-2016 дата публикации

DEVICES INCLUDING AT LEAST ONE INTERMIXING LAYER

Номер: US20160163336A1
Автор: Cheng Yuhang, Franzen Scott, Kautzky Michael C., Rejda Ed F., Seigler Michael Allen, Wierman Kurt W., Zhao Tong
Принадлежит:

Devices that include a near field transducer (NFT), the NFT including a peg having five surfaces, the peg including a first material, the first material including gold (Au), silver (Ag), aluminum (Al), copper (Cu), ruthenium (Ru), rhodium (Rh), iridium (Ir), or combinations thereof; an overlying structure; and at least one intermixing layer, positioned between the peg and the overlying structure, the at least one intermixing layer positioned on at least one of the five surfaces of the peg, the intermixing layer including at least the first material and a second material. 1. A device comprising:a near field transducer (NFT), the NFT comprising a peg having five surfaces, the peg comprising a first material, the first material comprising gold (Au), silver (Ag), aluminum (Al), copper (Cu), ruthenium (Ru), rhodium (Rh), iridium (Ir), or combinations thereof;an overlying structure;at least one intermixing layer, positioned between the peg and the overlying structure, the at least one intermixing layer positioned on at least one of the five surfaces of the peg, the intermixing layer comprising at least the first material and a second material.2. The device according to claim 1 , wherein the peg comprises gold or an alloy thereof.3. The device according to claim 2 , wherein the second material is selected from a metal claim 2 , an oxide claim 2 , a nitride claim 2 , a carbide claim 2 , or a sulfide.4. The device according to claim 1 , wherein the second material is selected from:rhenium (Re), osmium (Os), iridium (Ir), platinum (Pt), tantalum (Ta), ruthenium (Ru), technetium (Tc), rhodium (Rh), palladium (Pd), beryllium (Be), aluminum (Al), manganese (Mn), indium (In), boron (B), tungsten (W), molybdenum (Mo), chromium (Cr), silicon (Si), nickel (Ni), titanium (Ti), yttrium (Y), vanadium (V), magnesium (Mg), cobalt (Co), tin (Sn), niobium (Nb), hafnium (Hf), zirconium (Zr), titanium (Ti), scandium (Sc), ruthenium (Ru), germanium (Ge), neodymium (Nd), iron (Fe), and ...

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Номер записи: 57
07-06-2018 дата публикации

HEAT ASSISTED MAGNETIC DATA RECORDING HEAD WITH HEAT SINK

Номер: US20180158473A1
Автор: Gorantla Venkata R K, Matsumoto Takuya, Pentek Aron
Принадлежит:

A magnetic write head for heat assisted magnetic recording having a novel heat sink structure. The write head includes a magnetic write pole and a thermal transducer located adjacent to a leading edge of the magnetic write pole. A heat sink structure, constructed of a non-magnetic, thermally conductive material such as Au, Ag or Cu partially surrounds the magnetic write pole. The heat sink structure can be formed to contact first and second sides of the magnetic write pole, and can be recessed from the media facing surface of the write head. The space between the heat sink structure and the media facing surface can be filled with a physically hard, non-corrosive metal. 1. A magnetic recording head , comprising:a magnetic write pole that extends to a media facing surface, the magnetic write pole having first and second laterally opposed sides; anda heat sink structure comprising a non-magnetic, thermally conductive material, the heat sink structure being formed adjacent to each of the first and second laterally opposed sides of the magnetic write pole.2. The magnetic recording head as in claim 1 , wherein the heat sink structure has a thermal conductivity greater than that of alumina and greater than that of silicon dioxide.3. The magnetic recording head as in claim 1 , wherein the magnetic write pole has a back edge located opposite a media facing surface and the heat sink structure extends beyond the back edge of the magnetic write pole.4. The magnetic recording head as in claim 1 , wherein the heat sink structure contacts each of the first and second sides of the magnetic write pole and extends laterally outward therefrom.5. The magnetic recording head as in claim 3 , wherein the heat sink structure contacts a portion of the back edge of the magnetic write pole.6. The magnetic recording head as in further comprising a thermal transducer located adjacent to the magnetic write pole.7. The magnetic recording head as in claim 1 , wherein the heat sink structure ...

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Номер записи: 58
28-08-2014 дата публикации

Beam controlling method and optical pickup device for performing the method

Номер: US20140245331A1
Автор: Chan-ik LEE, Ji-sun AHN, Jin-Ho Jeong, Ju-hee IM, Ki-bok Kim
Принадлежит: Toshiba Samsung Storage Technology Korea Corp

Provided is an optical pickup device that compensates for an aberration caused by a beam splitter. When a beam of light is reflected from a disc and proceeds towards a beam splitter, the beam splitter is designed to allow the reflected beam to pass therethrough. However, the beam splitter can cause an astigmatism in the reflected beam due to diffraction. According to various aspects herein, an optical pickup device may include a compensation device that generates an inverse astigmatism to compensate for the astigmatism generated by the beam splitter.

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Номер записи: 59
18-06-2015 дата публикации

HEAT ASSISTED MAGNETIC RECORDING HEAD EMPLOYING NOBLE METAL ALLOY AS DIFFUSION BARRIER LAYER

Номер: US20150170683A1
Автор: Balamane Hamid, Rawat Vijay Prakash Singh, Staffaroni Matteo, Stipe Barry C.
Принадлежит: HGST NETHERLANDS B.V.

The present invention generally relates to a HAMR head. An insulating layer isolates the NFT from the magnetic lip of the magnetic pole. A noble metal alloy diffusion barrier layer is present between the insulating layer and the magnetic lip to prevent diffusion from the insulating layer into the magnetic lip. The noble metal alloy has a melting point of greater than about 1065 degrees Celsius, and the noble metals may be selected from Au, Pt, Ir, Re and Ru. The alloying elements comprise less than 10 percent of the alloy. The alloying elements can include Rh, W, Mo, Ni, Pt, Co, B, Ru and combinations thereof. The diffusion barrier layer may surround the magnetic lip, may surround the insulating layer, or may simply be at the interface of the insulating layer and the magnetic lip. 1. A heat assisted magnetic recording head , comprising:an antenna having a notch;an insulating layer disposed on the antenna;a diffusion barrier layer disposed on the insulating layer, wherein the diffusion barrier layer comprises a noble metal alloy;a magnetic lip comprising a magnetic material disposed on the diffusion barrier layer; anda heat sink thermally connected to the magnetic lip and the antenna.2. The heat assisted magnetic recording head of claim 1 , wherein the noble metal alloy diffusion barrier comprises one or more noble metal elements selected from the group consisting of Au claim 1 , Ag claim 1 , Pt claim 1 , Ir claim 1 , Re and Ru.3. The heat assisted magnetic recording head of claim 2 , wherein the noble metal alloy diffusion barrier comprises less than 10 percent of one or more alloying elements selected from the group consisting of claim 2 , Rh claim 2 , Ni claim 2 , W claim 2 , Mo claim 2 , Co claim 2 , Ir claim 2 , Ru claim 2 , B and Pt.4. The heat assisted magnetic recording head of claim 3 , wherein the insulating layer has a first surface in contact with the antenna claim 3 , a second surface opposite the first surface claim 3 , and side surfaces connecting the ...

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Номер записи: 60
18-06-2015 дата публикации

DEVICES INCLUDING AT LEAST ONE ADHESION LAYER AND METHODS OF FORMING ADHESION LAYERS

Номер: US20150170684A1
Автор: Boyne Andrew J., Cheng Yuhang, Franzen Scott, Jayashankar Sethuraman, Kautzky Michael C., Rejda Ed F., Seigler Michael Allen, Wierman Kurt W., Zhao Tong
Принадлежит:

Devices that include a near field transducer (NFT), the NFT having a disc and a peg, and the peg having an air bearing surface; and at least one adhesion layer positioned on the air bearing surface of the peg, the adhesion layer including one or more of the following: tungsten (W), molybdenum (Mo), chromium (Cr), silicon (Si), nickel (Ni), tantalum (Ta), titanium (Ti), yttrium (Y), vanadium (V), magnesium (Mg), cobalt (Co), tin (Sn), niobium (Nb), hafnium (Hf), and combinations thereof; tantalum oxide, titanium oxide, tin oxide, indium oxide, and combinations thereof; vanadium carbide (VC), tungsten carbide (WC), titanium carbide (TiC), chromium carbide (CrC), cobalt carbide (CoC), nickel carbide (NiC), yttrium carbide (YC), molybdenum carbide (MoC), and combinations thereof and titanium nitride (TiN), zirconium nitride (ZrN), hafnium nitride (HfN), and combinations thereof.

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Номер записи: 61
18-06-2015 дата публикации

NOBLE METAL SURROUNDED MAGNETIC LIP AND HEAT SINK FOR HEAT ASSISTED MAGNETIC RECORDING HEAD

Номер: US20150170685A1
Автор: Balamane Hamid, Rawat Vijay Prakash Singh, Staffaroni Matteo
Принадлежит:

The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic lip are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head. 1. A heat assisted magnetic recording head , comprising:an antenna;an aperture disposed over the antenna covering a portion of the antenna;a magnetic lip disposed over the aperture covering a portion of the aperture;a first conductive layer disposed between the magnetic lip and the aperture and over vertical sides of the magnetic lip;a second conductive layer disposed over the antenna, vertical sides and a top surface of the aperture not covered by the first conductive layer, and vertical sides of the first conductive layer;a heat sink disposed over the second conductive layer; anda write pole disposed over the heat sink, the first conductive layer, the second conductive layer and the magnetic lip.2. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer comprises a noble metal or an alloy containing over 95% of a noble metal.3. The heat assisted magnetic recording head of claim 2 , wherein the second conductive layer comprises a noble metal or an alloy containing over 95% of a noble metal.4. The heat assisted magnetic recording head of claim 1 , wherein the first conductive layer comprises a material selected from the group consisting of Au claim 1 , Rh claim 1 , Ru claim 1 , Ir claim 1 , Pd claim 1 , Pt claim 1 , Re claim 1 , Os claim 1 , and an alloy having over 95% of Au claim 1 , Rh claim 1 , Ru claim 1 , Ir claim 1 , Pd claim 1 , Pt claim 1 , Re ...

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Номер записи: 62
04-09-2014 дата публикации

Plasmon generator including two portions made of different metals

Номер: US20140247706A1
Автор: Hironori Araki, Hiroyuki Ito, Ryuji Fujii, Seiichiro Tomita, Shigeki Tanemura, Yoshitaka Sasaki
Принадлежит: Headway Technologies Inc, SAE Magnetics HK Ltd

A plasmon generator has a front end face located in a medium facing surface of a magnetic head. The plasmon generator includes a first portion formed of a first metal material and a second portion formed of a second metal material. The first portion has an inclined surface facing toward the front end face. The second portion is located between the inclined surface and the front end face, and includes a first end face located in the front end face and a second end face in contact with the inclined surface. The second metal material is higher in Vickers hardness than the first metal material. The first portion has a plasmon exciting part. The front end face generates near-field light.

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Номер записи: 63
11-09-2014 дата публикации

Magnetic devices including low thermal conducivity portion

Номер: US20140254044A1
Автор: Erik Jon Hutchinson, Vasudevan Ramaswamy
Принадлежит: SEAGATE TECHNOLOGY LLC

A device including a magnetic transducer; top and bottom magnetic shields, wherein the top and bottom magnetic shields are adjacent the magnetic transducer on opposite surfaces thereof; a heating element configured to provide heating along a heating path towards the first and second magnetic shields; and a low thermal conductivity structure, wherein at least a portion of the low thermal conductivity structure is positioned along the heating path between the heating element and the magnetic transducer.

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Номер записи: 64
11-09-2014 дата публикации

Waveguide with phase shifting portions

Номер: US20140254335A1
Автор: Chubing Peng, Edward Charles Gage
Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus includes a plasmonic transducer with first and second oppositely disposed outer edges. A waveguide is configured to receive light from a light source, the waveguide have first and second portions that deliver first and second portions of the light to the first and second edges of the plasmonic transducer. The first and second portions are different by at least one of a geometry and a construction to cause a relative phase shift between the first and second portions of the light.

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Номер записи: 65
30-05-2019 дата публикации

DEVICES INCLUDING A DIFFUSION BARRIER LAYER

Номер: US20190164570A1
Автор: Blaber Martin, Brickner Hui, Cheng Yuhang, Duda John, Lee Tae-Woo, Sahoo Sarbeswar, Zhao Tong
Принадлежит:

Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disc, wherein the peg is at the ABS of the device;a heat sink positioned adjacent the disc of the NFT;a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; anda conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.2. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises molybdenum (Mo) claim 1 , tantalum (Ta) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , neodymium (Nd) claim 1 , holmium (Ho) claim 1 , molybdenum (Mo) claim 1 , tungsten (W) claim 1 , iridium (Ir) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , rhenium (Re) claim 1 , titanium (Ti) claim 1 , zirconium (Zr) claim 1 , nickel (Ni) claim 1 , uranium (U) claim 1 , yttrium (Y) claim 1 , vanadium (V) claim 1 , or combinations thereof.3. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , tantalum (Ta) claim 1 , zirconium (Zr) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , or combinations thereof.4. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ...

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Номер записи: 66
25-06-2015 дата публикации

DEVICES INCLUDING AT LEAST ONE INTERMIXING LAYER

Номер: US20150179194A1
Автор: Cheng Yuhang, Franzen Scott, Kautzky Michael C., Rejda Ed F., Seigler Michael Allen, Wierman Kurt W., Zhao Tong
Принадлежит:

Devices that include a near field transducer (NFT), the NFT including a peg having five surfaces, the peg including a first material, the first material including gold (Au), silver (Ag), aluminum (Al), copper (Cu), ruthenium (Ru), rhodium (Rh), iridium (Ir), or combinations thereof; an overlying structure; and at least one intermixing layer, positioned between the peg and the overlying structure, the at least one intermixing layer positioned on at least one of the five surfaces of the peg, the intermixing layer including at least the first material and a second material.

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Номер записи: 67
01-07-2021 дата публикации

HOLOGRAPHIC DATA STORAGE DEVICE WITH SINGLE-ARM STRUCTURE

Номер: US20210201948A1
Автор: HU Dejiao, LIU Yicheng, LUO Tiewei, TIAN Jun, ZHENG Mu
Принадлежит:

The present invention relates to a holographic data storage device with a single-arm structure, and belongs to the technical field of optical holographic storage. According to the device disclosed in the present invention, a part of a reference arm and a part of a signal arm are integrated together to form a single-arm structure, which can not only reduce the number of optical and mechanical elements, but also reduce the system volume and cost without degrading performance. In addition, a signal beam and a reference beam share the same relay lens, so that the impact of environmental interference on the two beams is equal, and the stability of the entire system is improved. 1. A holographic data storage device with a single-arm structure , wherein a spherical light wave is used as a reference beam to interfere with a signal beam on a storage medium to form a hologram , and storage capacity is increased by a shift multiplexing method; a pair of beam combiner and beam splitter work in an optical system , and perform beam combining and splitting operations on the reference beam and the signal beam successively; and a relay lens group comprising a filter is disposed between the beam combiner and the beam splitter to transmit and filter patterns on a spatial light modulator.2. The holographic data storage device with a single-arm structure according to claim 1 , wherein the beam combiner and the beam splitter are optical elements with polarization selectivity characteristics.3. The holographic data storage device with a single-arm structure according to claim 1 , wherein the filter is a low-pass filter claim 1 , configured to control the size of the hologram on the storage medium.4. The holographic data storage device with a single-arm structure according to claim 1 , wherein at least one of lens elements in the relay lens group is installed on a translation stage in a beam axis direction.5. The holographic data storage device with a single-arm structure according to ...

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Номер записи: 68
18-09-2014 дата публикации

Topographic feedforward system

Номер: US20140269243A1
Автор: Jordin T. Kare, Lowell L. Wood, JR., Roderick A. Hyde
Принадлежит: ELWHA LLC

A topography detection mechanism may measure surface height of a side read/write track while the read/write head is interacting with a current read/write track. A memory may store the measured surface height.

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Номер записи: 69
25-09-2014 дата публикации

PLASMON GENERATOR HAVING FLARE SHAPED SECTION

Номер: US20140286147A1
Автор: Aoki Susumu, KAWAMORI Keita, KAWATO Hiroki, TANAKA Kosuke, Tsutsumi Takeshi
Принадлежит:

The present invention relates to a plasmon generator, in which a surface plasmon is excited by application of light. The plasmon generator extends along one direction. The plasmon generator includes a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; and a second cross section that is substantially parallel to the first end surface and is away from the first end surface. The first end surface has a polygonal shape that does not have a substantially acute inner angle. The second cross section has an upper part that has a shape substantially the same as or similar to that of the first end surface and a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part. 1. A plasmon generator , in which a surface plasmon is excited by application of light , extending along one direction , and comprising:a first end surface that is positioned on one end in the one direction and at which near-field light is generated along with the excitation of the plasmon; anda second cross section that is substantially parallel to the first end surface and is away from the first end surface,the first end surface having a polygonal shape that does not have a substantially acute inner angle, an upper part that has a shape substantially the same as or similar to that of the first end surface, and', 'a flare shaped lower part that is connected to the upper part and has a width that increases as it is far from the upper part., 'the second cross section having'}2. The plasmon generator according to claim 1 , whereinthe first end surface and the second cross section are substantially rectangular or square.3. The plasmon generator according to claim 1 , further comprising:an inclined surface for reducing a thickness of the lower part toward the first end surface.4. The plasmon generator according to claim 1 , whereinthe width of the ...

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Номер записи: 70
11-06-2020 дата публикации

RADIATION IMAGE READING DEVICE

Номер: US20200185002A1
Автор: MIYAMOTO Yuichi, Takasaka Masaomi
Принадлежит: HAMAMATSU PHOTONICS K.K.

A radiation image reading device includes: a light scanning unit; a light detection unit. Each of a transmittance when the excitation light reflected from the surface of the recording medium is transmitted through the optical filter and a transmittance when the signal light emitted from the surface of the recording medium at an angle larger than a predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter is smaller than a transmittance when the signal light emitted from the surface of the recording medium at an angle smaller than the predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter. 1. A radiation image reading device comprising:a light scanning unit which scans excitation light to a surface of a recording medium having a radiation image recorded thereon along a scan line;a light detection unit which detects signal light emitted from the surface of the recording medium by the scanning of the excitation light within a detection surface intersecting the surface of the recording medium and including the scan line; andan optical filter which is disposed between the light detection unit and the surface of the recording medium,wherein each of a transmittance when the excitation light reflected from the surface of the recording medium is transmitted through the optical filter and a transmittance when the signal light emitted from the surface of the recording medium at an angle larger than a predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is transmitted through the optical filter is smaller than a transmittance when the signal light emitted from the surface of the recording medium at an angle smaller than the predetermined angle with respect to a direction perpendicular to the scan line within the detection surface is ...

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Номер записи: 71
23-07-2015 дата публикации

SURFACE DIFFUSION INHIBITOR FOR HAMR NFT

Номер: US20150206545A1
Автор: Balamane Hamid, Rawat Vijay Prakash Singh
Принадлежит:

Embodiments of the present invention generally relate to a HAMR head including a near field transducer having an antenna, a surface diffusion inhibitor layer disposed on a portion of the antenna and an aperture disposed over the surface diffusion inhibitor layer. The surface diffusion inhibitor layer has a greater melting point than the antenna, and the surface diffusion inhibitor layer material is immiscible in the antenna material. 1. A heat assisted magnetic recording head , comprising: an antenna having a first melting point; and', 'at least one surface diffusion inhibitor layer disposed on a portion of the antenna, wherein the at least one surface diffusion inhibitor layer has a second melting point that is different than the first melting point., 'a near field transducer, wherein the near field transducer comprises2. The heat assisted magnetic recording head of claim 1 , further comprising:a first conductive layer disposed over the near field transducer;a magnetic lip disposed over the first conductive layer;a second conductive layer disposed over the first conductive layer and over vertical sides of the magnetic lip;a heat sink disposed over the second conductive layer; anda write pole disposed over the heat sink, the second conductive layer and the magnetic lip.3. The heat assisted magnetic recording head of claim 1 , wherein the at least one surface diffusion inhibitor layer is an Au alloy including a material selected from the group consisting of Rh claim 1 , Ru claim 1 , W claim 1 , Mo claim 1 , Ir claim 1 , Co claim 1 , Pt claim 1 , B and Ni.4. The heat assisted magnetic recording head of claim 1 , wherein the second melting point is greater than the first melting point.5. The heat assisted magnetic recording head of claim 1 , further comprising an adhesion layer disposed on the at least one surface diffusion inhibitor layer claim 1 , wherein the adhesion layer includes a material selected from the group consisting of Si claim 1 , Ta claim 1 , Ti claim 1 ...

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Номер записи: 72
22-07-2021 дата публикации

COMPACT MODE CONVERTER FOR HEAT-ASSISTED MAGNETIC RECORDING

Номер: US20210225397A1
Автор: Asselin Pierre, Goggin Aidan Dominic, Harvey Christopher Neil, Mehfuz Reyad
Принадлежит:

A write head includes an input coupler configured to receive light excited by a light source. A waveguide core is configured to receive light from the input coupler at a fundamental transverse electric (TE) mode. The waveguide core has a first straight portion. The waveguide core has a mode converter portion comprising a branched portion extending from the first straight portion. The mode converter portion is configured to convert the light to a higher-order (TE) mode, the mode converter portion spaced apart from the input coupler. The waveguide core has a second straight portion between the mode converter portion and a media-facing surface. The write head has a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TEmode from the waveguide and directing surface plasmons to a recording medium in response thereto. 1. A write head comprising:an input coupler configured to receive light excited by a light source;{'sub': '00', 'claim-text': a first straight portion;', {'sub': '10', 'a mode converter portion comprising a branched portion extending from the first straight portion, the mode converter portion configured to convert the light to a higher-order (TE) mode, the mode converter portion separated from the input coupler; and'}, 'a second straight portion between the mode converter portion and a media-facing surface; and, 'a waveguide core configured to receive light from the input coupler at a fundamental transverse electric (TE) mode, the waveguide core comprising{'sub': '10', 'a near-field transducer at the media-facing surface, the near-field transducer receiving the light at the TEmode from the waveguide and directing surface plasmons to a recording medium in response thereto.'}2. The write head of claim 1 , wherein the branched portion is separated from at least part of the second straight portion by a gap for a predetermined length.3. The write head of claim 2 , wherein the gap has a substantially constant ...

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Номер записи: 73
21-07-2016 дата публикации

METHODS OF FORMING MATERIALS FOR AT LEAST A PORTION OF A NFT AND NFTS FORMED USING THE SAME

Номер: US20160210989A1
Автор: Kautzky Michael C., Sahoo Sarbeswar, Zhao Tong
Принадлежит:

A method including depositing a plasmonic material at a temperature of at least 150° C.; and forming at least a peg of a near field transducer (NFT) from the deposited plasmonic material. 1. A method comprising:depositing a plasmonic material at a temperature of at least 150° C.; andforming at least a peg of a near field transducer (NFT) from the deposited plasmonic material.2. The method according to claim 1 , wherein the plasmonic material is deposited at a temperature of at least 175° C.3. The method according to claim 1 , wherein the plasmonic material is deposited at a temperature of at least 180° C.4. The method according to claim 1 , wherein forming at least the peg of the NFT comprises patterning a peg with an oxide or amorphous carbon.5. The method according to further comprising forming at least a disk of the NFT from a material deposited at a temperature of at least 150° C.6. The method according to claim 5 , wherein the material deposited to form the disk is deposited in a different step than the material deposited to form the peg.7. The method according to claim 1 , wherein the plasmonic material is sputter deposited.8. The method according to claim 1 , wherein the plasmonic material comprises gold (Au) claim 1 , silver (Ag) claim 1 , copper (Cu) claim 1 , aluminum (Al) claim 1 , or an alloy thereof.9. The method according to claim 1 , wherein the near field transducer comprises gold (Au) claim 1 , or an alloy thereof.10. The method according to claim 1 , wherein the material is not annealed.11. The method according to claim 1 , wherein the peg has an average grain size of at least about 50 nm.12. A near field transducer (NFT) comprising:a peg, the peg having an average grain size of not less than 75 nm.13. The NFT according to claim 12 , wherein the material making up the peg was deposited at a temperature of not less than 175° C.14. The NFT according to claim 12 , wherein the plasmonic material is deposited at a temperature of at least 180° C.15. The ...

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Номер записи: 74
21-07-2016 дата публикации

THERMALLY-ASSISTED MAGNETIC RECORDING HEAD INCLUDING A MAIN POLE AND A PLASMON GENERATOR

Номер: US20160210994A1
Автор: ARAKI Hironori, Ito Hiroyuki, Mamiya Hideo, Sasaki Yoshitaka, TANEMURA Shigeki, TOMITA Seiichiro
Принадлежит: HEADWAY TECHNOLOGIES, INC.

A thermally-assisted magnetic recording head includes a main pole and a plasmon generator. The main pole has a front end face located in the medium facing surface. The plasmon generator has a near-field light generating surface located in the medium facing surface. The front end face of the main pole includes a first end face portion and a second end face portion. The second end face portion is located farther from the near-field light generating surface than is the first end face portion, and is greater than the first end face portion in width in the track width direction. The first end face portion and the near-field light generating surface are equal in width. 1. A thermally-assisted magnetic recording head comprising:a medium facing surface configured to face a recording medium;a coil for producing a magnetic field corresponding to data to be written on the recording medium;a main pole having a front end face located in the medium facing surface;a waveguide including a core and a cladding, the core allowing light to propagate therethrough, the cladding being provided around the core; anda plasmon generator having a near-field light generating surface located in the medium facing surface, whereinthe main pole is configured to pass a magnetic flux corresponding to the magnetic field produced by the coil, and to produce from the front end face a write magnetic field for writing the data on the recording medium,the plasmon generator is configured to excite a surface plasmon on the plasmon generator based on the light propagating through the core, and to generate near-field light from the near-field light generating surface based on the surface plasmon,the front end face of the main pole and the near-field light generating surface are at locations different from each other in a direction of travel of the recording medium,the front end face of the main pole includes a first end face portion, and a second end face portion contiguous with the first end face portion,the ...

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Номер записи: 75
06-08-2015 дата публикации

NEAR FIELD TRANSDUCER HAVING NOTCH DIFFUSION BARRIER

Номер: US20150221324A1
Автор: Balamane Hamid, Bonetti Joseph A., Katine Jordan A., Rawat Vijay P.S., Robertson Neil L., Schreck Erhard, Staffaroni Matteo, Stipe Barry C.
Принадлежит: HGST NETHERLANDS B.V.

An apparatus according to one embodiment includes a near field transducer comprising a conductive metal film having a main body, a notch extending from the main body, and a notch diffusion barrier layer interposed between the notch and the main body. An apparatus according to another embodiment includes a write pole, and a near field transducer adjacent the write pole. The near field transducer includes a conductive metal film having a main body, a notch extending from the main body, and a notch diffusion barrier layer interposed between the notch and the main body. The notch diffusion barrier layer includes a metal selected from a group consisting of Rh, W, Mo, Ru, Ir, Co, Ni, Pt, B, and alloys thereof. Additional systems and methods are also presented. 1. An apparatus , comprising:a write pole; anda near field transducer comprising a conductive metal film having a main body, a notch extending from the main body, and a notch diffusion barrier layer interposed between the notch and the main body,wherein the notch diffusion barrier layer, as formed, includes alloys of gold with at least one of Rh, W, Mo, Ru, Ir, Co, Ni, Pt, B.2. The apparatus as recited in claim 1 , comprising an aperture layer above the notch claim 1 , notch diffusion barrier layer and main body; and a second diffusion barrier layer between the aperture and the write pole.3. The apparatus as recited in claim 1 , wherein the conductive metal film is selected from a group consisting of gold claim 1 , a gold alloy claim 1 , silver claim 1 , and a silver alloy.4. The apparatus as recited in claim 2 , wherein a width of the aperture layer is greater than a width of the write pole claim 2 , wherein the second diffusion barrier layer extends along the entirety of a bottom edge of the write pole and only a portion of an upper edge of the aperture layer.5. (canceled)6. The apparatus as recited in claim 1 , wherein a deposition thickness of the notch diffusion barrier layer is between about 5 angstroms and ...

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Номер записи: 76
16-10-2014 дата публикации

Polarization Rotator for Thermally Assisted Magnetic Recording

Номер: US20140305902A1
Автор: Hiroyuki Ito, Shigeki Tanemura, Xuhui Jin, Yoshitaka Sasaki
Принадлежит: Headway Technologies Inc

A process sequence for forming a waveguide structure with a light polarization rotator section that converts transverse electric light from a TE light source to transverse magnetic light which is subsequently coupled to a plasmon generator (PG) is disclosed. The light polarization rotator section has a length determined by TE LD light wavelength, and the effective mode index of the two orthogonal fundamental modes, and a slope is formed in one side of the symmetric structure with a 45 degree angle with respect to a bottom surface. Offsets that narrow the cross-track width may be formed on the two sides of the light polarization rotator section to improve symmetry for higher TE to TM polarization conversion efficiency.

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Номер записи: 77
13-08-2015 дата публикации

Recording Device

Номер: US20150228299A1
Автор: Jiro Hashidume, Yoshiaki Yamauchi
Принадлежит: HITACHI LTD

The present invention provides a recording device that offers a large displacement control effect. The recording device includes a recording medium 224 , a motor 222 that drives the recording medium, and a recording device head M 1 that records and reproduces a signal to and from the recording medium. The recording device also has a displacement control mechanism M 2 . The displacement control mechanism M 2 includes a vibrating plate 226 that has two opposing surfaces facing the recording medium, the vibrating plate being displaced in the rotation axis direction of the recording medium; and an oscillator 232 that is positioned away from the two opposing surfaces of the vibrating plate facing the recording medium, the oscillator driving and displacing the vibrating plate.

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Номер записи: 78
04-08-2016 дата публикации

Optical disc device and spherical aberration error signal detection method

Номер: US20160225400A1
Автор: Kenji Yamamoto, Kimihiro Saito, Takashi Nakao, Takeshi Kubo, Tomoya Ikuta
Принадлежит: Sony Corp

There is provided an optical disc device that performs recording on a land and a groove, including an optical path splitter configured to split a luminous flux returning from an optical disc into first and second optical paths, a first detector configured to receive a whole of the luminous flux that has passed through the first optical path, a second detector configured to receive a luminous flux of an inside part of the luminous flux that has passed through the second optical path, a spherical aberration error signal generation unit configured to generate a spherical aberration error signal on the basis of a difference between a first focus error signal obtained on the basis of a detection signal of the first detector and a second focus error signal obtained on the basis of a detection signal of the second detector, a spherical aberration correction unit, and an adjustment unit.

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Номер записи: 79
03-08-2017 дата публикации

Self-Aligned Hybrid Au-Rh Near Field Transducer for Enhanced Reliability

Номер: US20170221505A1
Автор: Han Cherng-Chyi, HU Weisheng, Jin Xuhui, Staffaroni Matteo, Wang Shengyuan, Xu Weihao
Принадлежит:

A near field transducer (NFT) is formed between a waveguide and main pole layer at an air bearing surface (ABS). The NFT includes a resonator body layer made of Au, for example, with a front side at a first plane that is recessed a first distance from the ABS and a back side that is at a second plane formed parallel to the ABS and first plane. The NFT also has a peg layer with a rectangular peg portion between the ABS and first plane, and a larger back portion between the first and second planes that overlays directly above the resonator body layer. The peg layer is preferably made of Rh to improve mechanical stability of the NFT without significantly degrading overall optical efficiency of the NFT. A blocker may be formed between the ABS and waveguide to prevent light not coupled to the NFT from reaching the ABS. 1. A near field transducer (NFT) formed between a main pole layer and a waveguide in a thermally assisted magnetic recording (TAMR) head wherein waveguide light excites a NFT resonant mode that propagates to an air bearing surface (ABS) and is coupled to a magnetic medium to facilitate a write process , the NFT comprises:{'b': '1', '(a) a resonator body layer made of a first metal or alloy with a plasmonic character and having a first thickness (t) wherein the NFT resonant mode is excited, the resonator body layer has a front side having a first cross-track width at a first plane that is recessed a first distance from the ABS, a back side with a second cross-track width greater than the first cross-track width at a second plane formed parallel to the ABS and first plane, and two sides connecting the front and back sides wherein the two sides are separated by an increasing cross-track distance with increasing distance from the first plane to the back side; and'}{'b': '2', 'claim-text': (1) a peg portion or peg with a front side at the ABS, a back side at the first plane, and two sides aligned orthogonal to the ABS and separated by the first cross-track ...

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Номер записи: 80
20-08-2015 дата публикации

HEAT SINK LAYER ALONG AN APERTURE OF A NEAR-FIELD TRANSDUCER

Номер: US20150235658A1
Автор: Cao Lina, Chen Weibin, Scholz Werner
Принадлежит: SEAGATE TECHNOLOGY LLC

A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer includes an aperture surrounded by walls of plasmonic material and a notch protruding within the aperture. The walls are oriented normal to the media-facing surface. A write pole is proximate the near-field transducer. The write pole has a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture. A heat sink layer of the plasmonic material is disposed along the back surface and the aperture-facing surface of the write pole. The heat sink layer is thermally and optically coupled to the near-field transducer. 1. A recording head comprising: an aperture surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface; and', 'a notch protruding within the aperture;, 'a near-field transducer proximate a media-facing surface, the near-field transducer comprisinga write pole proximate the near-field transducer, the write pole having a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture; anda heat sink layer of the plasmonic material along the back surface and the aperture-facing surface of the write pole, the heat sink layer thermally and optically coupled to the near-field transducer.2. The recording head of claim 1 , wherein the write pole comprises a downtrack extension that has a reduced cross-section proximate the near-field transducer claim 1 , at least part of the back surface and the aperture-facing surface of the write pole being located on the downtrack extension.3. The recording head of claim 2 , wherein the reduced cross-section of the downtrack extension is constant over a downtrack distance near the near-field transducer.4. The recording head of claim 2 , wherein the reduced cross-section of the downtrack extension tapers from a larger cross-track dimension away from the near-field transducer to a smaller cross- ...

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Номер записи: 81
10-08-2017 дата публикации

RECORDING METHOD AND RECORDING DEVICE

Номер: US20170229143A1
Автор: Arai Satoshi, Hotta Yoshihiko, Ishimi Tomomi, SAWAMURA Ichiro, UETAKE Kazuyuki, Yokota Yasuroh
Принадлежит: RICOH COMPANY, LTD.

A recording method including: emitting laser light from an optical fiber array to record an image formed of writing units with moving a recording target and the optical fiber array relatively using a recording device including a plurality of laser light-emitting elements and an emitting unit including the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein a maximum length of the writing unit along a sub-scanning direction is controlled with set values of: a duty ratio and a cycle of a pulse signal input to the emitting unit; recording energy applied to the recording target; and a spot diameter of the laser light, to record with overlapping an edge of the writing unit with an edge of the adjacent writing unit in the sub-scanning direction. 1. A recording method comprising:emitting laser light from an optical fiber array to record an image formed of writing units with moving a recording target and the optical fiber array relatively using a recording device including a plurality of laser light-emitting elements and an emitting unit including the optical fiber array, in which a plurality of optical fibers configured to guide laser light emitted from the laser light-emitting elements are aligned, wherein a maximum length of the writing unit along a sub-scanning direction is controlled with set values of a duty ratio and a cycle of a pulse signal input to the emitting unit; recording energy applied to the recording target; and a spot diameter of the laser light, to record with overlapping an edge of the writing unit with an edge of the adjacent writing unit in the sub-scanning direction.2. The recording method according to claim 1 , {'br': None, 'i': C', 'D', 'T·Vs, '0<−(1−)\u2003\u2003Mathematical Formula 1'}, 'wherein the writing units constituting the image satisfy a relationship represented by Mathematical Formula 1 belowwhere, in Mathematical Formula 1, C is a ...

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Номер записи: 82
27-08-2015 дата публикации

METHOD TO MAKE INTERFEROMETRIC TAPER WAVEGUIDE FOR HAMR LIGHT DELIVERY

Номер: US20150243304A1
Автор: LI Yunfei, SUN HAI, Wan Dujiang, Yi Ge, ZHAO Lijie
Принадлежит:

A method for making an interferometric taper waveguide (I-TWG) with high critical dimension uniformity and small line edge roughness for a heat assisted magnetic recording (HAMR) head, wherein the method includes creating an I-TWG film stack with two hard mask layers on top of an I-TWG core layer sandwiched between two cladding layers, defining a photoresist pattern over the I-TWG film stack using deep ultraviolet lithography, transferring the pattern to the first hard mask layer using reactive ion etching (RIE), forming a temporary I-TWG pattern on the second hard mask layer using RIE, transferring the temporary pattern to the I-TWG core using RIE, refilling the cladding layer, and planarizing using chemical mechanical planarization (CMP). 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. A method for manufacturing an interferometric taper waveguide (I-TWG) , the method comprising:depositing a film stack, the film stack comprising a plurality of hard mask layers and a cladding-core sandwich layer, wherein the plurality of hard mask layers is located above the cladding-core sandwich layer, and the cladding-core sandwich layer comprises a top cladding layer, a bottom cladding layer, and a core layer located between the top cladding layer and the bottom cladding layer;spinning a photoresist layer on a top hard mask layer;defining with a first microfabrication process an I-TWG pattern in the photoresist layer;transferring with a second microfabrication process the I-TWG pattern to the top hard mask layer;removing the photoresist;forming with a third microfabrication process the I-TWG pattern in a bottom hard mask layer;transferring with a fourth microfabrication process the I-TWG pattern to the core layer;refilling cladding material;removing with a fifth microfabrication process excess cladding material;planarizing with a sixth microfabrication process a top surface of the I-TWG; ...

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Номер записи: 83
03-09-2015 дата публикации

DEVICES INCLUDING NEAR FIELD TRANSDUCERS

Номер: US20150248901A1
Автор: Asselin Pierre, Itagi Amit Vasant, Jayashankar Sethuraman, Scholz Werner
Принадлежит:

An apparatus that includes a near field transducer (NFT), the NFT including, amongst other elements and materials: tantalum (Ta), niobium (Nb), molybdenum (Mo), rhodium (Rh), ruthenium (Ru), osmium (Os), titanium (Ti), zirconium (Zr), yttrium (Y), hafnium (Hf), platinum (Pt), palladium (Pd), vanadium (V), chromium (Cr), iridium (Ir), scandium (Sc), niobium (Ni), cobalt (Co), rhenium (Re), silicon (Si), geranium (Ge), alloys thereof, dispersions containing these elements, intermetallics based on these elements, admixtures thereof, or combinations thereof. 1. An apparatus comprising:a near field transducer (NFT), the NFT comprising osmium (Os), titanium (Ti), zirconium (Zr), yttrium (Y), hafnium (Hf), vanadium (V), scandium (Sc), rhenium (Re), geranium (Ge), or combinations thereof.2. The apparatus according to claim 1 , wherein the NFT comprises osmium (Os) claim 1 , or combinations thereof.3. The apparatus according to claim 1 , wherein the NFT comprises titanium (Ti) claim 1 , zirconium (Zr) claim 1 , or combinations thereof.4. The apparatus according to claim 1 , wherein the NFT comprise face centered cubic (fcc) cobalt.5. The apparatus according to claim 1 , wherein the material of the NFT has a melting point of about 2000 K or greater.6. The apparatus according to claim 1 , wherein the material of the NFT has a melting point of about 2500 K or greater.7. The apparatus according to claim 1 , wherein the material of the NFT has a melting point of about 3000 K or greater.8. The apparatus according to further comprising an energy source configured to transmit energy at a wavelength of at least about 1400 nm.9. The apparatus according to claim 8 , wherein the energy source transmits energy at a wavelength between about 1400 nm and about 1600 nm.10. The apparatus according to claim 1 , wherein the NFT is a peg and disc type NFT.11. An apparatus comprising:a light source configured to transmit energy at a wavelength of at least about 1300 nm;a waveguide; anda near ...

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Номер записи: 84
03-09-2015 дата публикации

Heat assisted magnetic recording head having dual waveguides

Номер: US20150248906A1
Автор: Amit Vasant Itagi, Frank Edgar Stageberg, Pierre Asselin, Werner Scholz
Принадлежит: SEAGATE TECHNOLOGY LLC

Systems that include an energy source configured to provide transverse electric (TE) mode energy; a channel waveguide configured to receive energy from the energy source, the channel waveguide having at least one mirror plane; and a near field transducer (NFT) configured to receive energy from the channel waveguide, the NFT having at least one mirror plane.

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Номер записи: 85
16-07-2020 дата публикации

MATERIALS FOR NEAR FIELD TRANSDUCERS AND NEAR FIELD TRANSDUCERS CONTAINING SAME

Номер: US20200227086A1
Автор: Cheng Yuhang, Franzen Scott, Gong Jie, Jayashankar Sethuraman, Kautzky Michael C., Rejda Ed F., Sahoo Sarbeswar, Seigler Michael Allen, Wierman Kurt W., Zhao Tong
Принадлежит:

A device including a near field transducer, the near field transducer including gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof; erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof; and barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof. 1. A device comprising: boron (B), bismuth (Bi), indium (In), sulfur (S), silicon (Si), tin (Sn), hafnium (Hf), niobium (Nb), manganese (Mn), antimony (Sb), tellurium (Te), carbon (C), nitrogen (N), and oxygen (O), and combinations thereof;', 'erbium (Er), holmium (Ho), lutetium (Lu), praseodymium (Pr), scandium (Sc), uranium (U), zinc (Zn), and combinations thereof; and', 'barium (Ba), chlorine (Cl), cesium (Cs), dysprosium (Dy), europium (Eu), fluorine (F), gadolinium (Gd), germanium (Ge), hydrogen (H), iodine (I), osmium (Os), phosphorus (P), rubidium (Rb), rhenium (Re), selenium (Se), samarium (Sm), terbium (Tb), thallium (Th), and combinations thereof., 'a near field transducer, the near field transducer comprising gold (Au) and at least one other secondary atom, the at least one other secondary atom selected from2. The device according to claim 1 , wherein the at least one secondary atom is selected from: boron (B) claim 1 , bismuth (Bi) claim 1 , indium (In) claim 1 , sulfur (S) claim 1 , silicon (Si) claim 1 , tin (Sn) claim 1 , hafnium (Hf) claim 1 , niobium (Nb) claim 1 , manganese (Mn) claim 1 , antimony (Sb) claim 1 , tellurium (Te) claim 1 , carbon (C ...

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Номер записи: 86
24-08-2017 дата публикации

HEAT ASSISTED MAGNETIC RECORDING WRITER HAVING INTEGRATED POLARIZATION ROTATION WAVEGUIDES

Номер: US20170243608A1
Автор: Mu Jianwei, Sochava Sergei, VAN ORDEN DEREK A., Yi Ge
Принадлежит:

A heat assisted magnetic recording (HAMR) writer is described. The HAMR writer is coupled with a laser that provides energy having a first polarization state. The HAMR writer has an air-bearing surface (ABS) configured to reside in proximity to a media during use, a plurality of waveguides, a main pole and at least one coil. The main pole writes to the media and is energized by the coil(s). The waveguides receive the energy from the laser and direct the energy toward the ABS. The waveguides include an input waveguide and an output waveguide. The input waveguide is configured to carry light having the first polarization state. The output waveguide is configured to carry light having a second polarization state different from the first polarization state. The waveguides are optically coupled and configured to transfer the energy from the first polarization state to the second polarization state. 1. A heat assisted magnetic recording write apparatus , the apparatus comprising:an input waveguide comprising an input core, wherein the input core receives light energy from a laser in a first polarization state; andan output waveguide comprising an output core, wherein the output core is optically coupled to the input core to receive the light energy in the first polarization state and convert the light energy into a second polarization state that is different from the first polarization state, and wherein the output core is offset from the input core.2. The apparatus of claim 1 , wherein claim 1 , in the first polarization state claim 1 , the light energy is polarized in a cross-track direction.3. The apparatus of claim 1 , wherein claim 1 , in the second polarization state claim 1 , the light energy is polarized in a down-track direction.4. The apparatus of claim 1 , wherein an aspect ratio of the input core is different from an aspect ratio of the output core.5. The apparatus of claim 1 , wherein the input core includes a first wall extending along a width direction ...

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Номер записи: 87
20-11-2014 дата публикации

Optical information device, cross-talk reduction method, computer, player, and recorder

Номер: US20140341007A1
Автор: Kanji Wakabayashi, Kousei Sano, Yoshiaki Komma
Принадлежит: Panasonic Corp

A ratio Xm of an information item recorded on an adjacent track relative to an information item recorded on a main track included in a first signal obtained from a first light flux having passed through a center region ( 6 c ) is different from ratios Xs1 and Xs2 of the information items recorded on the adjacent track relative to the information items recorded on the main track included in second and third signals obtained from second and third light fluxes having passed through first and second end regions ( 6 r , 6 l ), and a ratio of respective gains of a first waveform equalizer ( 80 c ), a second waveform equalizer ( 80 r ), and a third waveform equalizer ( 80 l ) is determined so as to cancel the information item recorded on the adjacent track in each of frequency components of the first signal, the second signal, and the third signal.

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Номер записи: 88
31-08-2017 дата публикации

NFT WITH MECHANICALLY ROBUST MATERIALS

Номер: US20170249958A1
Автор: Blaber Martin Giles, Kautzky Michael Christopher, Seigler Michael Allen
Принадлежит:

A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer comprises an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface. A notch protrudes within the aperture. The notch comprises at least one of Rh and Ir. A write pole is proximate the near-field transducer. The write pole has a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture. 1. A recording head comprising: an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface', 'a notch protruding within the aperture, the notch comprising at least one of Rh and Ir; and, 'a near-field transducer proximate a media-facing surface, the near-field transducer comprisinga write pole proximate the near-field transducer, the write pole having a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture.2. The recording head of claim 1 , wherein a first portion of the notch comprises Rh and a second portion of the notch comprises Au.3. The recording head of claim 1 , further comprising a barrier layer between the notch and the aperture portion.4. The recording head of claim 3 , wherein the barrier layer comprises Rh or Ir.5. The recording head of claim 1 , wherein a first portion of the notch comprises one or more of Rh and Ir and second portion of the notch comprises a material different from Rh or Ir.6. The recording head of claim 5 , wherein the first portion of the notch is the portion of the notch closest to the media-facing surface.7. The recording head of claim 5 , wherein the second portion comprises a plasmonic material.8. The recording head of claim 1 , wherein at least one of the notch and the aperture portion are at least partially coated with one or more of Rh and Ir.9. The recording head of claim 1 , wherein the notch comprises:an inner ...

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Номер записи: 89
31-08-2017 дата публикации

Waveguide light delivery with subwavelength mirror for heat-assisted magnetic recording

Номер: US20170249962A1
Автор: Chubing Peng
Принадлежит: SEAGATE TECHNOLOGY LLC

A recording head has a near-field transducer proximate a media facing surface of the read/write head. A waveguide overlaps and delivers light to the near-field transducer. A subwavelength focusing mirror is at an end of the waveguide proximate the media-facing surface. The subwavelength focusing mirror recycles a residual transverse field for excitation of the near-field transducer.

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Номер записи: 90
08-09-2016 дата публикации

DEVICES INCLUDING NEAR FIELD TRANSDUCER AND ADHESION LAYER

Номер: US20160260448A1
Автор: Huang Xiaoyue, Kautzky Michael C., Zhao Tong, Zhu Meng
Принадлежит:

A device including a near field transducer (NFT); a write pole; at least one dielectric material positioned between the NFT and the write pole; and an adhesion layer positioned between the NFT and the at least one dielectric material. 1. A device comprising:a near field transducer (NFT);a write pole;at least one dielectric material positioned between the NFT and the write pole; andan adhesion layer positioned between the NFT and the at least one dielectric material.218-. (canceled) Heat assisted magnetic recording (referred to herein as “HAMR”) technology is a promising approach for increasing storage density beyond 1 Tbit/inch. HAMR heads can utilize near field transducers (NFTs) to heat the magnetic recording layers. Poor adhesion between the materials of the NFT and the surrounding structures in the HAMR head can lead to failure during processing or use. Therefore, there remains a need to decrease such failure.Disclosed are devices including a near field transducer (NFT); a write pole; at least one dielectric material positioned between the NFT and the write pole; and an adhesion layer positioned between the NFT and the at least one dielectric material.Also disclosed are devices that include an energy source; a NFT configured to receive energy from the energy source; a write pole; at least one dielectric material positioned between the NFT and the write pole; and an adhesion layer positioned between the NFT and the at least one dielectric material.Also disclosed are devices that include an energy source; a waveguide configured to receive energy from the energy source and couple it into the NFT; a NFT configured to receive energy from the waveguide; a write pole; at least one dielectric material positioned between the NFT and the write pole; and an adhesion layer positioned between the NFT and the at least one dielectric material.The figures are not necessarily to scale. Like numbers used in the figures refer to like components. However, it will be understood that ...

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Номер записи: 91
07-09-2017 дата публикации

THIN FILM MAGNETIC HEAD, HEAD GIMBALS ASSEMBLY, HEAD ARM ASSEMBLY, AND MAGNETIC DISK UNIT

Номер: US20170256274A1
Автор: ANTOKU Yosuke, Fujita Mutsumi, KURIHARA Katsuki
Принадлежит: TDK Corporation

This thin film magnetic head includes: a magnetic pole including a first end surface exposed on an air bearing surface; a coil configured to provide a magnetic flux passing through inside of the magnetic pole; and a heatsink including a second end surface that is provided at a position recessed from the air bearing surface. The second end surface is configured to suppress reflection causing light that has traveled through an entering position on the air bearing surface to return to the entering position. 1. A thin film magnetic head , comprising:a magnetic pole including an end surface exposed on an air bearing surface;a coil configured to provide a magnetic flux passing through inside of the magnetic pole; anda heatsink including an end surface at a position recessed from the air bearing surface, the end surface of the heatsink being configured to suppress reflection causing light that has traveled through an entering position on the air bearing surface to return to the entering position.2. The thin film magnetic head according to claim 1 , wherein the end surface of the heatsink includes a part inclined with respect to the air bearing surface.3. The thin film magnetic head according to claim 2 , wherein the end surface of the heatsink is a curved surface protruding toward the air bearing surface.4. The thin film magnetic head according to claim 1 , wherein the end surface of the heatsink is covered with a light shielding film.5. The thin film magnetic head according to claim 1 , wherein the end surface of the heatsink has surface roughness higher than surface roughness of the end surface of the magnetic pole.6. The thin film magnetic head according to claim 1 , wherein the heatsink has a thickness larger than a thickness of the magnetic pole.7. The thin film magnetic head according to claim 1 , wherein the magnetic pole claim 1 , the coil claim 1 , and the heatsink are stacked in order in a down track direction.8. The thin film magnetic head according to claim 1 , ...

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Номер записи: 92
13-09-2018 дата публикации

NFT WITH MECHANICALLY ROBUST MATERIALS

Номер: US20180261240A1
Автор: Blaber Martin Giles, Kautzky Michael Christopher, Seigler Michael Allen
Принадлежит:

A recording head includes a near-field transducer proximate a media-facing surface. The near-field transducer comprises an aperture portion surrounded by walls of plasmonic material, the walls oriented normal to the media-facing surface. A notch protrudes within the aperture. The notch comprises at least one of Rh and Ir. A write pole is proximate the near-field transducer. The write pole has a back surface facing away from the media-facing surface and an aperture-facing surface proximate the aperture. 120-. (canceled)21. A near-field transducer , comprising:a base portion comprising a thermally robust material; anda peg embedded in a part of the base portion that faces a media-facing surface, the peg comprising an elongated outer part that extends from a lower edge of the enlarged portion towards the media-facing surface and an embedded part that is embedded within the base portion, the peg comprising a plasmonic material.22. The near-field transducer of claim 21 , wherein the peg comprises Au.23. The near-field transducer of claim 21 , wherein the base portion comprises at least one of Rh and Ir.24. The near-field transducer of claim 21 , wherein the base portion comprises a recess that exposes at least one side of the peg.25. The near-field transducer of claim 21 , wherein the peg has a thickness that is less than that of the base portion.26. The near-field transducer of claim 21 , further comprising a lower base portion.27. The near-field transducer of claim 26 , wherein the lower base portion comprises a thermally robust material.28. The near-field transducer of claim 26 , wherein the lower base portion comprises at least one of Rh and Ir.29. The near-field transducer of claim 21 , wherein a first portion of the peg comprises at least one of Rh and Jr and a second portion of the peg comprises a plasmonic material.30. The near-field transducer of claim 21 , wherein a first portion of the base portion comprises at least one of Rh and Jr and a second portion of ...

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Номер записи: 93
01-10-2015 дата публикации

LAYERED OPTICAL WAVEGUIDE AND NEAR FIELD TRANSDUCER

Номер: US20150277039A1
Автор: Huang Xiaoyue, Kautzky Michael C., Zhao Tong
Принадлежит: SEAGATE TECHNOLOGY LLC

Waveguides that include a top cladding layer made of a material having an index of refraction n; a core bilayer structure, the core bilayer structure including a lower index core layer having an index of refraction n; and a higher index core layer having an index of refraction n, wherein the higher index core layer includes TiOand one or more than one of NbO, CeO, TaO, ZrO, HfO, YO, ScO, MgO, AlOand SiO, wherein the lower index core layer is adjacent the higher index core layer; a bottom cladding layer made of a material having an index of refraction n, wherein the waveguide is configured with the higher index core layer of the core bilayer structure adjacent the top cladding layer and the lower index core layer of the core bilayer structure adjacent the bottom cladding layer, and wherein nis less than nand n, and nis less than nand n. 1. A waveguide comprising:{'sub': '4', 'a top cladding layer made of a material having an index of refraction n;'} [{'sub': '3', 'a lower index core layer having an index of refraction n; and'}, {'sub': 1', '2, 'a higher index core layer having an index of refraction n, wherein the higher index core layer comprises TiOand one or more secondary materials,'}, 'wherein the lower index core layer is adjacent the higher index core layer;, 'a core bilayer structure, the core bilayer structure comprising{'sub': '2', 'a bottom cladding layer made of a material having an index of refraction n,'}{'sub': 3', '1', '4', '3', '1', '2', '3', '1, 'wherein the waveguide is configured with the higher index core layer of the core bilayer structure adjacent the top cladding layer and the lower index core layer of the core bilayer structure adjacent the bottom cladding layer, and wherein nis less than n, nis less than nand n, and nis less than nand n.'}2. The waveguide according to claim 1 , wherein the higher index core layer comprises a laminated stack of layers.3. The waveguide according to claim 2 , wherein the laminated stack of layers comprise at ...

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Номер записи: 94
28-10-2021 дата публикации

HEAT-ASSISTED MAGNETIC RECORDING HEAD HAVING NEAR-FIELD TRANSDUCER WITH SUNKEN PLASMONIC PLATE

Номер: US20210335386A1
Автор: Peng Chubing
Принадлежит: SEAGATE TECHNOLOGY LLC

A recording head includes a nanorod configured to heat a hotspot on a recording media, a plasmonic plate configured to concentrate an electric field to excite the nanorod, and a heat sink configured to dissipate heat from the nanorod. The recording head includes a first diffusion barrier plate configured to resist diffusion of materials between the plasmonic plate and the nanorod and a second diffusion barrier plate configured to resist diffusion of materials between the heat sink and the nanorod. The first diffusion barrier plate is disposed between the nanorod and the plasmonic plate and is coupled to a bottom surface of the nanorod. The second diffusion barrier plate is disposed between the heat sink and the nanorod and is coupled to the top surface of the nanorod. 1. A recording head , comprising:a nanorod configured to generate a hotspot on a recording media, the a o including a top surface and a bottom surface;a plasmonic plate configured to concentrate an electric field to excite the nanorod;a first diffusion barrier plate configured to resist diffusion of materials between the plasmonic plate and the nanorod, the first diffusion barrier plate disposed between the nanorod and the plasmonic plate, the first diffusion barrier plate coupled to the bottom surface of the nanorod;a heat sink configured to dissipate heat from the nanorod; anda second diffusion barrier plate configured to resist diffusion of materials between the heat sink and the nanorod, the second diffusion barrier plate disposed between the heat sink and the nanorod, the second diffusion barrier plate coupled to the top surface of the nanorod.2. The recording head of claim 1 ,wherein the first diffusion barrier plate includes a bottom surface and a top surface and the second diffusion barrier plate includes a bottom surface and a top surface,wherein the bottom surface of the nanorod is coupled to the top surface of the first diffusion barrier plate,wherein the top surface of the nanorod is ...

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Номер записи: 95
01-10-2015 дата публикации

PLANAR PLASMON GENERATOR WITH THICKENED REGION AND PEG REGION

Номер: US20150279399A1
Автор: Chen Weibin, Scholz Werner
Принадлежит: SEAGATE TECHNOLOGY LLC

An apparatus (e.g., a heat assisted magnetic recording read/write element) that has an optical component that extends to a location adjacent a media-facing surface of a slider body. The apparatus further includes a planar plasmon antenna that is disposed between the tip portion of the magnetic write pole and the optical component. The planar plasmon antenna can be formed of a plasmonic material operationally capable of a plasmonic excitation in response to an evanescent coupling with an optical mode of the optical component. In some instances, the planar plasmon antenna includes an enlarged region spaced from the optical component and a peg region formed in the enlarged region. The peg region has a thickness in a direction substantially transverse to the optical component that is less than a thickness of a portion of the enlarged region that spaces the peg region from the optical component. 1. An apparatus comprising:an optical component extending to a location adjacent a media-facing surface; and an enlarged region spaced from a core of the optical component; and', 'a peg region formed in the enlarged region and having a thickness in a direction substantially transverse to the optical component that is less than the thickness of a portion of the enlarged region that spaces the peg region from the optical component., 'a planar plasmon antenna optically coupled to the optical component and formed of a plasmonic material operationally capable of a plasmonic excitation in response to an evanescent coupling with an optical mode of the optical component; wherein the planar plasmon antenna comprises2. The apparatus of claim 1 , further comprising:a magnetic write pole having a tip portion proximate the media-facing surface; anda first heat sink region abutting the enlarged region and disposed between the planar plasmon antenna and the write pole.3. The apparatus of claim 1 , wherein the enlarged region comprises:a first layer spaced from the core of the optical component ...

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Номер записи: 96
22-09-2016 дата публикации

DEVICES INCLUDING METAL LAYER

Номер: US20160275969A1
Автор: Boyne Andrew J., Cheng Yuhang, Franzen Scott, Gong Jie, Rejda Ed F., Seigler Michael, Wierman Kurt W.
Принадлежит:

Devices having an air bearing surface (ABS), the devices include a write pole; a near field transducer (NFT) including a peg and a disc, wherein the peg is at the ABS of the device; an overcoat, the overcoat including a low surface energy layer. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disc, wherein the peg is at the ABS of the device;a metallic layer positioned over at least the peg of the NFT at the ABS, the metallic layer comprising: iridium (Ir), rhodium (Rh), ruthenium (Ru), radium (Ra)—is this correct?, platinum (Pt), palladium (Pd), rhenium (Re), chromium (Cr), niobium (Nb), nickel (Ni), lead (Pb), silicon (Si), tin (Sn), aluminum (Al), tungsten (W), molybdenum (Mo), hafnium (Hf), titanium (Ti), zirconium (Zr), yttrium (Y), or combinations thereof; andan overcoat positioned over at least the metallic layer.2. The device according to claim 1 , wherein the metallic layer comprises iridium (Ir) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , radium (Ra) claim 1 , or combinations thereof.3. The device according to claim 1 , wherein the metallic layer comprises platinum (Pt) claim 1 , palladium (Pd) claim 1 , ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , rhodium (Rh) claim 1 , rhenium (Re) claim 1 , chromium (Cr) claim 1 , niobium (Nb) claim 1 , nickel (Ni) claim 1 , lead (Pb) claim 1 , silicon (Si) claim 1 , tin (Sn) claim 1 , aluminum (Al) claim 1 , tungsten (W) claim 1 , molybdenum (Mo) claim 1 , hafnium (Hf) claim 1 , titanium (Ti) claim 1 , zirconium (Zr) claim 1 , yttrium (Y) claim 1 , or combinations thereof4. The device according to claim 1 , wherein the metallic layer comprises iridium (Ir).5. The device according to claim 1 , wherein the metallic layer comprises iridium (Ir) claim 1 , chromium (Cr) claim 1 , tin (Sn) claim 1 , platinum (Pt) claim 1 , or combinations thereof.6. The device according to claim 1 , wherein the metallic layer is an ...

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Номер записи: 97
22-09-2016 дата публикации

DEVICES INCLUDING A DIFUSSION BARRIER LAYER

Номер: US20160275979A1
Автор: Blaber Martin, Brickner Hui, Cheng Yuhang, Duda John, Lee Tae-Woo, Sahoo Sarbeswar, Zhao Tong
Принадлежит:

Devices having an air bearing surface (ABS), the devices including a write pole; a near field transducer (NFT) that includes a peg and a disc, wherein the peg is at the ABS of the device; a heat sink positioned adjacent the disc of the NFT; a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; and a conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°. 1. A device having an air bearing surface (ABS) , the device comprising:a write pole;a near field transducer (NFT) comprising a peg and a disc, wherein the peg is at the ABS of the device;a heat sink positioned adjacent the disc of the NFT;a dielectric gap positioned adjacent the peg of the NFT at the ABS of the device; anda conformal diffusion barrier layer positioned between the write pole and the dielectric gap, the disc, and the heat sink, wherein the conformal diffusion barrier layer forms at least one angle that is not greater than 135°.2. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises molybdenum (Mo) claim 1 , tantalum (Ta) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , neodymium (Nd) claim 1 , holmium (Ho) claim 1 , molybdenum (Mo) claim 1 , tungsten (W) claim 1 , iridium (Ir) claim 1 , rhodium (Rh) claim 1 , ruthenium (Ru) claim 1 , rhenium (Re) claim 1 , titanium (Ti) claim 1 , zirconium (Zr) claim 1 , nickel (Ni) claim 1 , uranium (U) claim 1 , yttrium (Y) claim 1 , vanadium (V) claim 1 , or combinations thereof.3. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ruthenium (Ru) claim 1 , iridium (Ir) claim 1 , tantalum (Ta) claim 1 , zirconium (Zr) claim 1 , niobium (Nb) claim 1 , hafnium (Hf) claim 1 , or combinations thereof.4. The device according to claim 1 , wherein the conformal diffusion barrier layer comprises ...

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Номер записи: 98
22-09-2016 дата публикации

APPARATUS AND METHOD FOR STORING AND RETRIEVING OPTICAL SENSOR CALIBRATION DATA

Номер: US20160275982A1
Автор: Austerlitz Howard, Boyd Lewis
Принадлежит:

An optical storage device for storing data includes at least one optical waveguide for receiving an optical interrogation signal and providing a response to the optical interrogation signal and a plurality of optical elements arranged relative to the at least one optical waveguide. The plurality of optical elements are responsive to the optical interrogation signal provided through the at least one waveguide to return a prescribed data value through the at least one optical waveguide. The plurality of optical elements represent encoded data concerning a function of an optical sensor. 1. An optical storage device for storing data , comprising:at least one optical waveguide for receiving an optical interrogation signal and providing a response to the optical interrogation signal; anda plurality of optical elements arranged relative to the at least one optical waveguide and responsive to the optical interrogation signal provided through the at least one waveguide to return a prescribed data value through the at least one optical waveguide, wherein the plurality of optical elements represent encoded data concerning a function of a sensor.2. The optical storage device according to claim 1 , comprising:an interrogation port for interrogating the optical storage device;a plurality of optical waveguides optically coupled to the interrogation port, each optical waveguide of the plurality of optical waveguides including a delay element operative to delay the transmission of optical data through a portion of the respective optical waveguide, whereinrespective ones of the plurality of optical elements terminate respective ones of the plurality of optical waveguides in a prescribed arrangement to form a data sequence.3. The optical storage device according to claim 2 , wherein the optical elements comprise i) optical reflectors and optical absorbers claim 2 , or ii) polarization changing elements.4. The optical storage device according to claim 2 , wherein the delay introduced ...

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Номер записи: 99
22-08-2019 дата публикации

HEAD GIMBAL ASSEMBLY AND MAGNETIC DISK DEVICE WITH THE SAME

Номер: US20190259420A1
Автор: Furutani Kazuhiro, Takahashi Kan, WATANABE Toru, Yamane Masami
Принадлежит:

According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between a leading-side step portion and a trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and at least a pair of capturing grooves which is formed on a bottom surface of the deep groove. The capturing grooves are provided along the pair of side surface and are placed with a gap from the pair of side surfaces. 1. A head gimbal assembly comprising:a suspension;a gimbal portion provided at the suspension; anda magnetic head supported on the gimbal portion,wherein the magnetic head comprisesa slider which comprises an air bearing surface including a pair of side edges, a pair of side surfaces along the pair of side edges of the air bearing surface, a leading-side end surface, and a trailing-side end surface, anda head portion provided in the slider and configured to write and read data, andwherein the slider comprises a leading-side step portion on a leading-side end portion of the air bearing surface, a trailing-side step portion on a trailing-side end portion of the air bearing surface and including the head portion, a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and at least a pair of capturing grooves which is formed on a bottom surface of the deep groove, and the pair of capturing grooves is provided along the pair of side surfaces and is disposed with a gap from the pair of side surfaces, each of the capturing grooves intermittently extends from the trailing-side step portion to the leading-side step ...

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Номер записи: 100
29-08-2019 дата публикации

HEAD GIMBAL ASSEMBLY AND MAGNETIC DISK DEVICE HAVING THE SAME

Номер: US20190267038A1
Автор: Furutani Kazuhiro, Higashiya Teruyoshi, Takahashi Kan, WATANABE Toru, Yamane Masami
Принадлежит:

According to one embodiment, a head gimbal assembly includes a suspension and a magnetic head supported by the suspension via a gimbal portion. The magnetic head includes a slider and a head portion provided in the slider. The slider includes an air bearing surface, a pair of side surfaces, a leading-side end surface, and a trailing-side end surface. The slider includes a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and a pair of partition walls which extends from the trailing-side step portion toward the leading-side step portion along the pair of side surfaces to close at least a portion of a side surface opening of the deep groove. 1. A head gimbal assembly comprising:a suspension;a gimbal portion provided in the suspension; anda magnetic head supported by the gimbal portion,wherein the magnetic head comprisesa slider which comprises an air bearing surface including a pair of side edges, a pair of side surfaces along the pair of side edges, a leading-side end surface, and a trailing-side end surface, anda head portion provided in the slider and configured to record and read data, andwherein the slider comprises a leading-side step portion provided on a leading-side end portion of the air bearing surface, a trailing-side step portion which is provided on a trailing-side end portion of the air bearing surface and in which the head portion is imbedded, a deep groove which is formed between the leading-side step portion and the trailing-side step portion and is open to the air bearing surface and the pair of side surfaces, and a pair of partition walls which extends from the trailing-side step portion toward the leading-side step portion along the pair of side surfaces to close at least a part of a side surface opening of the deep groove.2. The head gimbal assembly of claim 1 , whereineach of the partition walls is formed to be flush with the ...

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Номер записи: 101