ДИСПЕРСИОННО-ТВЕРДЕЮЩИЙ МАГНИТОТВЕРДЫЙ СПЛАВ

Изобретение относится к области металлургии, а именно к дисперсионно-твердеющим магнитотвердым сплавам на основе системы Fe-Cr-Со. Заявляемый сплав содержит, мас.%: Cr 14-18, Со 12-13, W 8-10, Ga 0,2-0,5, Cu 0,1-0,4, при суммарном содержании меди и галлия не более 0,6, железо - остальное. Сплав характеризуется повышенными значениями удельной намагниченности при повышенных значениях удлинения и сохранении значений коэрцитивной силы и прочностных характеристик. 1 табл.

Способ выплавки с направленной кристаллизацией магнитного сплава системы Fe-Al-Ni-Co

Изобретение относится к области металлургии, а именно к технологии производства магнитных сплавов системы железо-алюминий-никель-кобальт, применяемых для получения постоянных магнитов электродвигателей и навигацинных устройств. Способ включает размещение поликристаллической заготовки из сплава на затравке в керамической форме, размещение керамической формы в области нагревателя над охладителем и проведение процесса направленной кристаллизации сплава при наличии температурного градиента перед фронтом кристаллизации, при этом поликристаллическую заготовку из сплава предварительно расплавляют и повышают ее температуру до 1580-1620°С, расплавленную поликристаллическую заготовку заливают в подогретую до температуры 1500-1600°С керамическую форму, выдерживают в ней 0,5-1 мин и проводят процесс направленной кристаллизации сплава посредством перемещения керамической формы в жидкометаллический охладитель с температурой 300-320°С со скоростью 1-5 мм/мин в условиях температурного градиента на фронте ...

Кремнистая трансформаторная сталь

FERROMAGNETISCHES MATERIAL

FERROMAGNETIC METALLIC POWDERS USEFUL FOR MAGNETIC RECORDING AND PROCESSES FOR PRODUCING SAID METALLIC POWDERS

Ferromagnetic metallic powders useful for magnetic recording and processes for producing said metallic powders

Ferromagnetic Fe-Ni alloy powders having the combination of a coercive force of 550-900 Oe (oersted) and a saturation flux density of 90-170 emu/g are provided by applying a nickel compound in a liquid to a particulate, oxygen-containing iron compound having an average particle length of 0.5-5 mu m and an average particle width of 0.02-0.5 mu m, and then drying and reducing the treated material to produce a metallic powder. The ferromagnetic powders are suitable for production of magnetic recording media because of the balanced magnetic properties.

PROCESS FOR PREPARING MAGNETIC RECORDING MEDIUM

FE-CR-CO PERMANENT MAGNET ALLOY

EISEN-CHROM-KOBALT MAGNETLEGIERUNG UND VERFAHREN ZUR HERSTELLUNG EINES FERTIGUNGSGEGENSTANDES HIERAUS

VERWENDUNG EINER LEGIERUNG AUF KOBALT-NICKEL-TITAN-EISEN-BASIS ALS MAGNETISCH HALBHARTEN, IN GLAS EINSCHMELZBAREN WERKSTOFF

PURIFY NEEDLE-SHAPED PARTICLES ON IRON BASIS ABSTENTION MAGNETIC RECORDING MATERIAL

Procedure for the production one essentially from iron of existing magnetically sturdy metallic powder for magnetic recording

MAGNETIC STORAGE MEDIUM FROM NANO-PARTICLES

MAGNETIC RECORDING MEDIUM MAGNETIC RECORDING MEDIUM

Multicaloric MnNiSi alloys

A multicaloric alloy material combines two isostructural compounds, the first compound being MnNiSi and the second compound being either MnFeGe or CoFeGe, each such compound having extremely different magnetic and thermo-structural properties. The resulting alloy material (MnNiSi) ...

Multicaloric MnNiSi alloys

A multicaloric alloy material combines two isostructural compounds, the first compound being MnNiSi and the second compound being either MnFeGe or CoFeGe, each such compound having extremely different magnetic and thermo-structural properties. The resulting alloy material (MnNiSi) ...

MAGNETIC ALLOY FOR USE IN THERMO AND MAGNETO PRINTING

PROCESS FOR PRODUCING SEMI-HARD MAGNETIC MATERIALS

Aimant permanent et procédé pour le fabriquer.

Verfahren zur Herstellung eines im wesentlichen aus Eisen bestehenden Pulvers für magnetische Aufzeichnung

MANUFACTURING PROCESS OF A MAGNETICALLY SEMIHARD ONE IN GLASS OF A-FUSIBLE ALLOY ON COBALT NICKEL IRON BASIS, A BY THIS PROCEDURE RECEIVED ALLOY AND USE THE SAME.

PROCEDURE FOR THE PRODUCTION OF A MAGNETICALLY SEMIHARD ONE IN GLASS OF A-FUSIBLE ALLOY ON COBALT NICKEL TITANIUM IRON BASIS AND USE OF THE ALLOY.

PROCEDURE FOR THE PRODUCTION OF A MAGNETIC ONE KOERPERS FROM A FE-CR-CO-MAGNETLEGIERUNG.

FERROMAGNETIC PIGMENTS

A wear -resisting type samarium cobalt magnet for medical instrument

Nano-crystalline magnetic powder core with magnetic conductivity of mu=60

The invention discloses a nano-crystalline magnetic powder core with magnetic conductivity of mu=60. The nano-crystalline magnetic powder core is prepared according to the following steps of: carrying out heat treatment on an iron base non-crystalline thin tape prepared via a rapid cooling method, and the iron base non-crystalline thin tape is converted into a nano-crystalline thin tape; obtaining nano-crystalline metal powders after the nano-crystalline thin tape is smashed; ball-milling and reshaping the nano-crystalline metal powders; screening the nano-crystalline metal powders, and mixing the screened nano-crystalline metal powders into powders distributed in particles, wherein the powders comprise 90-98 percent of first powder passing through a minus 200 mesh and 2-10 percent of second powder passing through a minus 150 - above 200 mesh; mixing the mixed nano-crystalline metal powders with a bonding agent, and shaping the magnetic powder core via compression; and annealing on the ...

Superfine high-dispersion super-paramagnetism ferrate nano particles and preparation method thereof

The permanent magnet and the iron nitride formed iron nitride of the permanent magnet technology

Adjustable fluorescent and room temperature ferromagnetic of a four-membered dilute magnetic GUANTUM point material and its preparation method

PERMANENT MAGNET COMPRISING A STACK OF N UNITS

Permanent magnet anisotropic properties

Process for producing semi-hard Co-Nb-Fl magnetic materials

Improvements with the magnets

PERMANENT MAGNETS OUT OF ALLOYS FE-CR-CO HAS PROPERTIES MAGNETIC AMELIOREES

PERMANENT MAGNET COMPRISING AN ANTIFERROMAGNETIC LAYER AND A FERROMAGNETIC LAYER

PORPHYRISEE FOR MAGNETIC BANDS POWDERS

ARTICLE FOR MAGNETIC HEAT EXCHANGE AND METHOD OF MANUFACTURING THE SAME

MAGNETISKT REGISTRERINGSMEDIUM

MAGNETOCALORIC ALLOYS USEFUL FOR MAGNETIC REFRIGERATION APPLICATIONS

This invention relates to magnetocaloric materials comprising alloys useful for magnetic refrigeration applications. In some embodiments, the disclosed alloys may be Cerium, Neodymium, and/or Gadolinium based compositions that are fairly inexpensive, and in some cases exhibit only 2nd order magnetic phase transitions near their curie temperature, thus there are limited thermal and structural hysteresis losses. This makes these compositions attractive candidates for use in magnetic refrigeration applications. Surprisingly, the performance of the disclosed materials is similar or better to many of the known expensive rare-earth based magnetocaloric materials.

PERMANENT MAGNET ALLOY, METHOD FOR MANUFACTURING SAME, PERMANENT MAGNET, AND METHOD FOR MANUFACTURING SAME

The permanent magnet alloy according to the present disclosure comprises 41 to 53 atomic % inclusive of Mn, 46 to 53 atomic % inclusive of Al, and 0.5 to 10 atomic % inclusive of Cu, wherein the ratio of the stable phase having a tetragonal structure is greater than or equal to 50%.

Magnetic alloy, magnetic recording medium, and magnetic recording and reproducing apparatus

A magnetic alloy comprises Pt in an amount of 40 at % to 60 at %, and at least two 3d transition metal elements, wherein the total amount of the 3d transition metal elements is from 60 at % to 40 at %, and the average number of valence electrons in the respective 3d transition metal elements as calculated on the basis of the compositional proportions of the elements is from 7.5 to 9.

Method of producing cobalt-platinum magnetic alloys with improved magnetic properties

A method for processing CoPt alloys with improved magnetic properties. The method includes sealing a sample of a CoPt alloy in an evacuated quartz tube, and heating the alloy to a temperature of approximately 1000 degrees C. to homogenize the alloy for approximately 3 hours. The sample is then cooled at a controlled cooling rate of 120-150 degrees C. per minute to 600 degrees C. The sample is then held at 600 degrees C. for 10 hours to promote isothermal ordering. Finally, the sample is quenched in mineral oil.

ANISOTROPIC IRON NITRIDE PERMANENT MAGNETS

Disclosed herein is a permanent magnet comprising: a plurality of aligned iron nitride nanoparticles wherein the iron nitride nanoparticles include α″-Fe16N2 phase domains; wherein a ratio of integrated intensities of an α″-Fe16N2 (004) x-ray diffraction peak to an α″-α″-Fe16N2 (202) x-ray diffraction peak for the aligned iron nitride nanoparticles is greater than at least 7%, wherein the diffraction vector is parallel to alignment direction, and wherein the iron nitride nanoparticles exhibit a squareness measured parallel to the alignment direction that is greater than a squareness measured perpendicular to the alignment direction.

HALF-HARD MAGNETISM POWDER AND HALF-HARD BOND MAGNET

PROBLEM TO BE SOLVED: To provide a half-hard bond magnet capable of obtaining a sufficient torque in case of being used for a hysteresis generator such as a torque limiter or the like. SOLUTION: As magnetism powder of the half-hard bond magnet, there is used the magnetism powder in which a composition is shown by the following chemical formula:Fe100-a-b-c-d-Ra-Bb-Tic-Nbdwhere a: 2.0 to 3.5 at%, b: 6.0 to 9.0 at%, c: 0.5 to 1.5 at%, d: 0 to 1.5 at%, a coercive force (iHc) is 8.0 to 160.0 kA/m, and a residual magnetic flux density (Br) is 1.0 to 1.5 T. COPYRIGHT: (C)2008,JPO&INPIT ...

ЛЕГИРОВАННЫЙ БОРОМ АНТИМОНИД МАРГАНЦА В КАЧЕСТВЕ ПОЛЕЗНОГО МАТЕРИАЛА ПОСТОЯННОГО МАГНИТА

Группа изобретений относится к изготовлению постоянного магнита из легированного бором антимонида марганца (MnSb). Смешивают порошок марганца, порошок сурьмы и порошок бора, а затем измельчают в высокоэнергетической планетарной шаровой мельнице со стеариновой кислотой в инертной атмосфере газообразного аргона с получением гомогенной смеси порошков Mn, Sb и B. Уплотняют полученную смеси порошков с получением таблеток и проводят дуговую плавку таблеток в атмосфере аргона с получением плавленых таблеток легированного бором MnSb. Плавленые таблетки дробят в ступке с пестиком и повторно измельчают в высокоэнергетической планетарной шаровой мельнице со стеариновой кислотой в инертной атмосфере газообразного аргона с получением порошка легированного бором MnSb. Полученный порошок уплотняют с образованием таблеток, которые отжигают при температуре от 240 до 270°C с получением легированного бором MnSb. Обеспечивается получение постоянного магнита с хорошими магнитными свойствами. 2 н. и 2 з.п. ф-лы ...

МАГНИТОСТРИКЦИОННЫЙ ТЕПЛОНОСИТЕЛЬ

FIELD: heating equipment.SUBSTANCE: invention relates to magnetorheological heat carriers for heat exchange refrigeration and air conditioning plants and systems. Magnetorheological heat carrier consists of liquid selected from alcohols, polyatomic alcohols, water, mixtures thereof, polyethylsiloxane, and microparticles of intermetallic magnetostrictive alloy of terbium, dysprosium and iron of composition: TbDyFeconcentration 0.1–1.6 wt%. Said microparticles are made in the form of flakes with size from 5 to 64 mcm in length and from 3 to 20 mcm in thickness.EFFECT: invention provides higher heat conductivity of heat carrier at intensification of heat exchange process.1 cl, 1 tbl, 3 ex РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 2 686 826 C1 (51) МПК C09K 5/10 (2006.01) H01L 41/20 (2006.01) H01F 1/047 (2006.01) H01F 1/053 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ИЗОБРЕТЕНИЯ К ПАТЕНТУ (52) СПК C09K 5/10 (2019.02); H01L 41/20 (2019.02); H01F 1/047 (2019.02); H01F 1/0536 (2019.02) (21) (22) Заявка: 2018111098, 28.03.2018 (24) Дата начала отсчета срока действия патента: 28.03.2018 30.04.2019 (73) Патентообладатель(и): Галкин Михаил Леонидович (RU) (56) Список документов, цитированных в отчете о поиске: RU 2624113 C2, 30.06.2017. RU (45) Опубликовано: 30.04.2019 Бюл. № 13 2 6 8 6 8 2 6 R U 2016110855 A, 28.09.2017. RU 2177124 C1, 20.12.2001. RU 2315391 C2, 20.01.2008. RU 2293261 C2, 10.02.2007. US 2017299231 A1, 19.10.2017. US 2016305692 A1, 20.10.2016. ПОЛИТОВА Г. А. и др. Влияние гидрирования на магнитные и магнитоупругие свойства соединений Tb 0,27 Dy 0,73 Fe 2 и Tb 0,27 Dy 0,73 Со 2 с (см. прод.) (54) МАГНИТОСТРИКЦИОННЫЙ ТЕПЛОНОСИТЕЛЬ (57) Реферат: Изобретение относится к сплава тербия, диспрозия и железа состава: Tb магнитореологическим теплоносителям для (0,30-0,44) Dy(0,15-0,30) Fe(0,30-0,50) концентрации 0,1теплообменных холодильных и кондиционерных 1,6 мас. %. Указанные микрочастицы изготовлены установок и систем. ...

Ferromagnetisches Metallpulver

NADELFOERMIGE FERROMAGNETISCHE METALLTEILCHEN UND VERFAHREN ZU IHRER HERSTELLUNG

L10-FeNi-MAGNETPULVER UND VERBUNDMAGNET

Ein L10-FeNi-Magnetpulver (11) weist eine mittlere Teilchengröße von 50 nm bis 1 µm und einen Mittelwert einer Kugeligkeit P von 0,9 oder größer auf, wobei die Kugeligkeit gemäß der folgenden Gleichung (1) definiert ist: Gleichung (1): P = Ls/Lr, wobei Lr in der Gleichung (1) ein Umfang eines L10-FeNi-Magnetpulverteilchens in einem Bild eines Mikroskops ist und Ls in der Gleichung (1) ein Umfang eines perfekten Kreises ist, der dieselbe Fläche wie das L10-FeNi-Magnetpulverteilchen in dem Bild aufweist, für das Lr berechnet wird.

Weichmagnetisches Blechpaket und Verfahren zur Herstellung eines weichmagnetischen Blechpakets für einen Stator und/oder Rotor einer elektrischen Maschine

Bereitgestellt wird ein weichmagnetisches Blechpaket, das erste Bleche und zweite Bleche, die in einem Stapel mit einer Stapelrichtung angeordnet sind, die im Wesentlichen senkrecht zu einer Hauptoberfläche der ersten Bleche und der zweiten Bleche verläuft. Die ersten Bleche weisen eine erste weichmagnetische Legierung auf und die zweiten Bleche weisen eine zweite weichmagnetische Legierung auf, die sich von der ersten weichmagnetischen Legierung unterscheidet. Die ersten Bleche und die zweiten Bleche sind im ganzen Stapel in der Stapelrichtung verteilt. die ersten Bleche und/oder die zweiten Bleche weisen eine Isolierbeschichtung auf, die bis zu mindestens 850°C hitzebeständig ist.

Improvements in or relating to the manufacture of anisotropic permanent mangets

An anisotropic permanent magnet is made from an alloy consisting of 26-30 per cent Co, 8-20 per cent Ni, 5-11 per cent Al, 5.1-10 per cent Ti, 0-8 per cent Cu and 0-2 per cent of additional elements, the balance being Fe by subjecting it to the action of a magnetic field while cooling from above the Curie point to at least 100 DEG C below that point, annealing and finally magnetizing in a direction corresponding to the direction of the magnetic field during cooling to produce a magnet having a (BH) max of at least 2.5 x 106 and a coercive force of at least 800 oersted. The additional elements may be one or more of Sb, Ca, C, Ce, Cr, Pb, Mn, Mg, Mo, Nb, Si, Ag, S, Ta, Sn, W, U, V, Zn and Zr. The magnet may be formed by casting or sintering. The cooling in the magnetic field may be from 1225 DEG C to 600 DEG C at an average rate of 3/4 to 10 DEG C per second. The magnets as produced are stated to be particularly useful in loudspeakers for radio and television sets. Specification 522,731 is ...

Magnetic elements for magnetically actuated devices and processes for their production

Magnetically actuated devices are equipped with a magnetically semihard, high-remanence Fe-Mn alloy which contains Mn in a preferred amount in the range of 3-25 weight percent whose remanence Br (gauss) typically is greater than or equal to 20,000-500x (weight percent Mn), and whose squareness BI/BS typically is greater than 0.95. Magnets made from alloys of the invention may be shaped, e.g., by cold drawing, rolling, bending, or flattening and may be used in devices such as, e.g., electrical contact switches, hysteresis motors, and other magnetically actuated devices. The alloys may also contain up to 0.2% each of Cr, Co, Ni, Si, Al, Cu, Mo, V, Ti, Mb, Zr, Ta, Hf and W, providing the total content of these impurities is less than 1%, together with up to 0.1% each of C, N, S, P, B, H and O, again providing the total maximum of these elements is below 0.5%, with the total Fe+Mn content being not less than 98%.

... 1,229,758. Iron alloy particles. E. I DUPONT DE NEMOURS & CO. June 25, 1969 [June 25 1968, May 23 1969], No. 32192/69 Headings C7A and C7D. Ferromagnetic particles having cross-sectional dimensions of 0À01 - 0À3 microns and a length of 0À01 - 4 microns consist, by weight, of :- Fe at least 30% Cr 0À4-20% B 1-7À5% Ni 0-35% Co 0-35% O 2 , less than 50%, as metal-oxide, -hydroxide, or moisture. The particles are made by reducing, in solution, salts of Fe, Cr and optionally Ni and/or Co with an alkali or alkaline earth metal borohydride, preferably, if elongated particles are desired, in a magnetic field. The particles may be compacted with or without a binder to form permanent magnets. Alternatively, they may be mixed with a film-forming binder and coated on to substrates to form magnetic tapes.

ALLOYS

... 1462577 Cobalt-iron alloys; heat-treatment VACUUMSCHMELZE GmbH 2 July 1975 [7 Aug 1974] 27791/75 Heading C7A A magnetically semi-hard alloy capable of being bonded to glass has a composition within the following range and lying within the area ABCDEA shown on Fig. 1. a component Ni-Ti-Me 3 - 30% where Me is one or more of Al, Cu, W, Mo, V, Cr and is in amount 0À1-4%, the Ti content is 1-5% and the total Me and Ti is 2À2-7%. The alloy is annealed at 600-1100‹C, cold worked at least 70% and finally annealed at 500-700‹C for 0À5-4 hours.

USE OF AN ALLOY ON COBALT NICKEL TITANIUM IRON BASIS AS MAGNETIC SEMIHARD ONE IN GLASS A-FUSIBLE MATERIAL

COBALT-BASED MAGNET FREE OF RARE EARTHS

CUBE TEXTURED NICKEL

In the production of bent metal wire springs, the bent springs are taken individually from a bending machine and conveyed to an electrical heat-tempering means where they are heated by resistance heating by passing a current through them. Then, while still hot from the heat-tempering, they are immersed in a bath of thermoplastics material in powder form so that the material melts and becomes coated onto the spring.

METHOD FOR FORMING IN SITU MAGNETIC MEDIA IN THE FORM OF DISCRETE PARTICLES

METHOD FOR FORMING IN SITU MAGNETIC MEDIA IN THE FORM OF DISCRETE PARTICLES A method of forming discrete magnetic particles in situ by dispersing a nickel hypophosphite solution in a binder and binder solvent, such as polyvinyl alcohol in water or polyester urethane polymer in an organic solvent, forming a coating from the nickel hypophosphite binder solution on a substrate, and exposing the coating to a radient energy source, such as x-rays or an electron beam. Thereafter the incipient magnetic media in the area exposed to radiation is developed by contact with a solution including ions of at least one of cobalt, nickel and iron and a reducing agent, such as a hypophosphite ion, to produce a magnetic media of discrete magnetic particles within the binder in the area exposed to the radiant energy while not forming such magnetic particles in other unexposed areas of the nickel hypophosphite coating.

FERROMAGNETIC PIGMENTS

Preparation method of high-coercivity manganese gallium magnetic powder

Pit-shaped permanent magnet and magnetic sensor adopting same

The invention discloses a pit-shaped permanent magnet and a magnetic sensor adopting the same. The permanent magnet is pit-shaped. A pit edge surface (121) of the permanent magnet is zigzag; a pit bottom surface (122) and a pit side surface (123) are rectangular or square; and the pit side surface (123) is vertical to the pit edge surface (121) and the pit bottom surface (122) respectively. The component of a magnetic filed Happly generated by the permanent magnet in the Z-axis direction can provide a target magnetic field for a magnetosensitive element; and the components of magnetic fields Happly generated by the permanent magnet in the X-axis direction and the Y-axis direction trend to zero or are within a small numerical interval. When the permanent magnet is used for the magnetic sensor, the magnetosensitive element can be enabled to work in the linear work area under the premise of keeping high sensitivity, so that the performance of the magnetic sensor is optimized. The permanent ...

Magnetic powder material, low-loss composite magnetic material containing same, and magnetic element using same

It is an object of the present invention to provide a material which can be used for low pressure molding, and which has a low core loss while maintaining the characteristic of an amorphous powder that is the high coercive force. There is provided a magnetic powder material containing, relative to the weight thereof, amorphous powders of 45 to 80 wt%, crystalline powders of 55 to 20 wt%, and a bonding agent. The magnetic powder material contains, relative to the mass thereof, Si of 4.605 to 6.60 mass%, Cr of 2.64 to 3.80 mass%, C of 0.225 to 0.806 mass%, Mn of 0.018 to 0.432 mass%, B of 0.99 to 2.24 mass%, P of equal to or less than 0.0248 mass%, S of equal to or less than 0.0165 mass%, Co of equal to or less than 0.0165 mass%, and a balance of Fe and inevitable impurities.

ALLOY CONTAINING COBALT-NICKEL-TITANE-FER AND ITS USE AS MAGNETIC MATERIAL DEMI-DUR WHICH CAN BE SODA WITH GLASS

Ferromagnetic Particles

ALLOY CONTAINING COBALT-NICKEL-TITANE-FER AND ITS USE AS MAGNETIC MATERIAL DEMI-DUR WHICH CAN BE SODA WITH GLASS

RAW MATERIAL ALLOY FOR NANO-COMPOSITE MAGNET, RAW MATERIAL ALLOY POWDER FOR NANO-COMPOSITE MAGNET, METHOD FOR PREPARING RAW MATERIAL ALLOY, METHOD FOR PREPARING NANO-COMPOSITE MAGNET POWDER, AND METHOD FOR PRODUCING NANO-COMPOSITE MAGNET, CAPABLE OF ENHANCING AMOUNT OF RAW MATERIAL ALLOY POWDER TO BE PROCESSED

PURPOSE: A raw material alloy for a nano-composite magnet, a raw material alloy powder for a nano-composite magnet, a method for preparing a raw material alloy, a method for preparing a nano-composite magnet powder, and a method for producing a nano-composite magnet are provided to increase an amount of raw material alloy to be processed by improving a composition thereof. CONSTITUTION: A raw material alloy for a nano-composite magnet is represented by a general formula Fe100-x-yRxBy, Fe100-x-y-zRxByCoz, Fe100-x-y-uRxByMu or Fe100-x-y-z-u RxByCozMu. At this time, R is a rare-earth element including Pr and/or Nd of 90 atomic percent or more and lanthanoid and/or Y of the remaining atomic percent, M is at least one element selected from a group including Al, Si, Ti, V, Cr, Mn, Ni, Cu, Ga, Zr, Nb, Mo, Hf, Ta, W, Pt, Pb, Au and Ag, and molar fractions x, y, z and u meet 2<=x<=6, 16<=y<=20, 0.2<=z<=7, 0.01<=u<=7. The raw material alloy includes a metastable phase Z represented by at least one ...

IRON NITRIDE PERMANENT MAGNET AND TECHNIQUE FOR FORMING IRON NITRIDE PERMANENT MAGNET

Fe-Pt based magnet and manufacturing method thereof

There is provided a miniature size of magnet superior in a maximum energy product, coercive force, and corrosion resistance. The Fe-Pt based magnet is characterized by employing an alloy which includes, by atomic ratio, 35-55% platinum, 0.001-10% the third element of at least one selected from elements in the groups of Iva, Va, IIIb, and Ivb, and the balance iron with unavoidable impurities, and which has an average crystal grain size of 0.3 m. In other words, the Fe-Pt based magnet with higher performance than the conventional one, is obtained by means of mixing a particular element with the Fe-Pt alloy in a predetermined proportion.

FeNi ORDERED ALLOY, METHOD FOR MANUFACTURING FeNi ORDERED ALLOY, AND MAGNETIC MATERIAL INCLUDING FeNi ORDERED ALLOY

The present invention has particles (10) having an L10-type ordered structure, the grain diameter of the particles being set to 200-500 nm, and the volume ratio [vol.%] of pores (11) included in the particles being 5% or less relative to the volume of the particles.

IRON NITRIDE COMPOSITIONS

An example composition may include a plurality of grains including an iron nitride phase. The plurality of grains may have an average grain size between about 10 nm and about 200 nm. An example technique may include treating a composition including a plurality of grains including an iron-based phase to adjust an average grain size of the plurality of grains to between about 20 nm and about 100 nm. The example technique may include nitriding the plurality of grains to form or grow an iron nitride phase.

METHOD FOR MANUFACTURING A PERMANENT Fe-Pt MAGNET, AND THE PRODUCT OBTAINED THEREBY

L'invention concerne un procédé de fabrication d'un aimant fer-platine permanent, pouvant être utilisé pour fixer une prothèse dans ou sur un corps, Ce procédé consiste à fondre un alliage contenant au moins 30 % at. de platine, 0,5 % at. d'un métal non-ferrique et du fer restant, à le refroidir, puis à le soumettre éventuellement à un processus de recristallisation. L'alliage est fondu dans une atmosphère inhibant l'oxydation, et on évite tout contact de la matière fondue avec des surfaces dont la température avoisine ou dépasse la température de fusion de l'alliage.

Magnetic recording medium

The present invention provides a magnetic recording medium having an excellent dispersion stability of a magnetic paint and excellent magnetic characteristic. The magnetic recording medium includes a non-magnetic support body on which a magnetic layer is formed which contains a ferromagnetic metal powder having a saturation magnetization of 148 Am2/kg or above and a binder. The ferromagnetic metal powder mainly consists of a transition metal to which Al, Si, and Sm are added. The Al content is in the range defined by: 24 atomic % Подробнее

Method of preparing a metal powder mainly consisting of iron

A method of preparing a metal powder for magnetic tapes mainly consisting of iron by reducing acicular iron oxide particles or iron oxide hydrate particles which contain 0.1 to 10 at. % of titanium related to the iron, the iron particles thereafter being dispersed in an organic binder system.

Magnetic recording medium and manufacturing method thereof

A sheet direction inverting apparatus has a switchback portion (105) for inverting the conveying direction of mails and the switchback portion (105) has a drive roller (14) and a driven roller (16). The length of mails sent to nips of the two rollers (14,16) in the conveying direction is detected by a sensor (S3), and after switching back, the length of the mails sent from the switchback portion in the conveying direction is detected by a sensor (S5), and an overlapped sheets detector (110) compares detection results. When the detection results are different, the overlapped sheets detector (110) detects overlapping of the mails.

JISEIZAIRYO OYOBI SONONETSUSHORIHOHO

MAGNETIC ALLOY

PURPOSE: To offer a low-cost magnetic alloy composed of a single alloy based on Fe-Cr-Co, having a complex magnetic property, excellent in workability and abound in mass-producibility. CONSTITUTION: The magnetic alloy comprises, by weight ratio, 17W35% Cr, 8W 20% Co, 0.1W10% Mo, 0.1W8% of one or more of Ti, Zr, and Hf, and the balance being Fe. The alloy may contain 0.1W10% of one or more of Mn, Y, Cu, Zn, Al, R.E.C., and platinum-group metals as additional components. The alloy can be provided with a complex magnetic property by subjecting it to special heat treatment and working. That is, the complex magnetic property is obtained by solution-treating the alloy in an α+γ dual phase zone and utilizing the spinodal decomposition of each phase a γ→α' transition mechanism and an age-precipitation-hardening mechanism, so that mainly α contributes to a large coercive force while γ contributes to a small coercive force. COPYRIGHT: (C)1982,JPO&Japio ...

MAGNETIC POWDER, MANUFACTURING METHOD THEREOF, AND MAGNETIC RECORDING MEDIUM

PROBLEM TO BE SOLVED: To provide magnetic powder having a minute average particle size and especially magnetic characteristics for enabling high-density magnetic recording, and to provide a method for manufacturing the magnetic powder and a magnetic recording medium having the magnetic powder. SOLUTION: The rare-earth transition metal-based alloy magnetic powder or its nitride have an average particle size of 5-20 nm and a coercive force of 125-400 kA/m. The magnetic powder is obtained by coating the surface of a transition metal oxide particle containing rare-earth elements with an alkali earth metal hydroxide layer, heating it, performing vapor phase reduction and slow oxidization, and further executing a reduction diffusion method. Then, the nitride is subjected to a nitriding reaction. The magnetic recording medium has a magnetic layer containing the magnetic powder and a binder on a nonmagnetic support. COPYRIGHT: (C)2006,JPO&NCIPI ...

PERMANENT MAGNET

PURPOSE: To obtain a Fe-M-C permanent magnet having practical magnetic characteristics using a stably available material, by employing a specific composition. CONSTITUTION: The composition consists of 8 to 28 at% of C, 23 to 35 at% of M (M is one or two of Zr, Hf, Nb, Ta, Mo and W) and Fe, the remainder, and necessary alloy elements Fe, M and C are melted in an arc melting furnace and thereafter ground by a grinding machine to an average particle size of about 3μ. Subsequently, the fine particles are molded at 3t/cm2 in a magnetic field of 15 KOe, the obtained molded object is sintered for four hours in an Ar gas at 1280 to 1300°C depending on the combination of M, and thereafter it is heat-treated for two hours in the Ar gas at 700°C. Whereupon, although the magnetic charateristics change as the combination of M changes, practically sufficient magnetic characteristics is obtained for any combination. Accordingly, by the Fe-M-C permanent magnet, practical magnetic characteristics can be ...

СПЛАВ ДЛЯ ПОСТОЯННЫХ МАГНИТОВ НА ОСНОВЕ ЖЕЛЕЗА

Использование: для производства постоянных магнитов в области электротехники, приборостроения, радиоэлектроники, машиностроения, медицины и т. д. Сущность изобретения: предложен сплав для постоянных магнитов на основе железа, содержащий редкоземельные элементы, бор, а также один из элементов группы 1А, скандий и фтор. Соотношение масс легких и тяжелых редкоземельных элементов находится в пределах от 3 до 8. При этом сплав содержит компоненты при следующем соотношении, мас. легкие редкоземельные элементы 20 25; тяжелые редкоземельные элементы 3 6; элементы группы 1А: барий, алюминий, галий 1 5; скандий 0,1 3; бор 0,1 1; фтор 0,1 0,6; железо остальное. Предложенный состав сплава позволяет улучшить магнитные и экспериментальные характеристики постоянных магнитов. 2 з. п. ф-лы, 3 табл.

Медистая никель-алюминиевая сталь для постоянных магнитов

MAGNETLEGIERUNG UND DEREN VERWENDUNG ALS SPEICHERMEDIUM IN THERMO- UND MAGNETOKOPIERVERFAHREN

FEINSTPULVER FUER MAGNETBAENDER

Gegenstand zum magnetischen Wärmeaustausch und ein Verfahren zu dessen Herstellung

Gegenstand, der eine Hülle aufweist, die zumindest einen Kern umhüllt, wobei der Kern eine Vielzahl von Partikeln aufweist, die Precursor eines magnetokalorisch aktiven Materials in Mengen aufweisen, um die Stöchiometrie des magnetokalorisch aktiven Materials zur Verfügung zu stellen.

VERFAHREN ZUR HERSTELLUNG EINES SELTENERDELEMENT-PERMANENTMAGNETEN AUF R-T-B-BASIS

Werkstoff fuer Dauermagnete

Article for magnetic heat exchange and method of manufacturing the same

Article for magnetic heat exchange and method of manufacturing the same Article for magnetic heat exchange comprising a mantle enveloping at least one core, wherein the core comprises a plurality of grains comprising a magnetocalorically active material or a plurality of particles comprising precursor of a magnetocalorically active material.

ACICULAR FERROMAGNETIC METAL PARTICLES AND METHOD FOR PREPARATION OF THE SAME

POWDER FOR MAGNETIC RECORDING MATERIALS

PROCESS OF PRODUCING SEMI-HARD MAGNETIC MATERIALS

... 1404803 Heat-treating magnetic alloys FUJITSU Ltd 10 Aug 1972 [1 June 1972] 37314/72 Heading C7A [Also in Division H1] A semi-hard magnetic alloy consisting of 73-93 wt per cent Co, 1 to 5% Nb with or without Ta, Ti, V, Zr, Mo, Cr or W, balance Fe, is annealed at not less than 900‹C followed by cold working with a reduction of area not less than 75%; it is then submitted to at least one stress relief treatment during which no precipitation occurs, and at least one treatment during which an intermetallic compound is precipitated. Suitable temperature ranges are 500-700‹C for stress relief and 600-900‹C for precipitation while the ratio of (Ta, Ti, V, Zr, Mo, Cr, W): Nb is preferably less than 30:70. The alloy may be used in read switches.

PURIFY NEEDLE-SHAPED PARTICLES ON IRON BASIS ABSTENTION MAGNETIC RECORDING MATERIAL

IRON CHROME COBALT MAGNETLEGIERUNG AND PROCEDURE FOR THE PRODUCTION OF A MANUFACTURING ARTICLE FROM THIS

IRON CHROME COBALT MAGNETLEGIERUNG AND PROCEDURE FOR THE PRODUCTION OF A MANUFACTURING ARTICLE FROM THIS

FEINE NADELFOERMIGE TEILCHEN AUF EISENBASIS ENTHALTENDES MAGNETISCHES AUFZEICHNUNGS- MATERIAL

RARE-EARTH-FREE OR NOBLE METAL-FREE LARGE MAGNETIC COERCIVITY NANOSTRUCTURED FILMS

Rare-earth-free, noble-metal-free nanostructured magnetic material thin films and methods of synthesis are described. Magnetocrystalline, ferrimagnetic thin films with islands of aligned single magnetic domains possess large coercivity. In particular, MnGa thin films are described. These materials provide a potential substitute to rare-earth-based and noble-metal-based magnets in applications related to electric motors and generators, audio headphones and speakers, recording media and magnetic hard drive memory. 1. A magnetic material comprising: the thin film comprises a plurality of single-magnetic-domain islands, and', 'the coercivity of the thin film is greater than that of epitaxially-deposited thin-film samples of rare-earth-free magnetic materials., 'a rare-earth free, noble-metal-free magnetocrystalline, ferromagnetic thin film disposed on a non-epitaxial substrate, wherein'}2. The material of claim 1 , wherein the thin film is a ferrimagnetic compound with tetragonal crystal symmetry.3. The material of claim 1 , wherein the thin film composition is MnY claim 1 , wherein Y is one or more of Al claim 1 , Ga claim 1 , Ti claim 1 , Fe claim 1 , Co claim 1 , Cr claim 1 , V and x is between 1 and 3.4. The material of claim 1 , wherein the coercivity is 2.5-5 T.5. The material of claim 1 , wherein the islands are nanoscale.6. The material of claim 1 , wherein the islands are magnetically isolated.7. The material of claim 1 , wherein the islands are 20-100 nm in diameter.8. The material of claim 1 , wherein the islands are 20-60 nm in diameter.9. The material of claim 1 , wherein the remnant magnetization of the material is greater than one-half of saturation magnetization.10. A magnetic material comprising: 'the thin film comprises a plurality of single-magnetic-domain islands and the magnetic domains are aligned with respect to each other.', 'a rare-earth free, noble-metal-free magnetocrystalline, ferromagnic thin film disposed on a non-epitaxial substrate, ...

Process for Treating a Magnetic Structure

Process for treating a magnetic structure, wherein it comprises the following steps: providing a magnetic structure comprising one first layer of magnetic material comprising a CoFeB alloy; irradiating the magnetic structure with light low-energy ions; and simultaneously holding the magnetic structure with a preset temperature profile and for a preset time. 1. A process for treating a magnetic structure , wherein it comprises the following steps:providing a magnetic structure comprising at least one first layer of magnetic material comprising a CoFeB alloy;irradiating the magnetic structure with low-energy light ions; andsimultaneously holding the magnetic structure at a preset temperature profile and for a preset time.2. The process according to claim 1 , wherein the preset temperature is less than or equal to 200° C.3. The process according to claim 1 , wherein the preset temperature is between 20° C. and 200° C.4. The process according to claim 1 , wherein the preset temperature is between 15° C. and 40° C.5. The process according to claim 1 , wherein the preset time is less than or equal to 1 hour.6. The process according to claim 1 , wherein the magnetic material is initially amorphous.7. The process according to claim 1 , wherein the magnetic material is initially crystalline.8. The process according to claim 1 , wherein the ions are He+ claim 1 , H+ claim 1 , Ar+ claim 1 , Xe+ claim 1 , or Ga+ ions.9. The process according to claim 1 , wherein the ions have an energy of between 0.1 keV and 150 keV.10. The process according to claim 1 , wherein claim 1 , during the irradiation step claim 1 , the ions are emitted at a dose of between 1*1013 ions/cm2 and 5*1016 ions/cm2.11. The process according to claims 1 , wherein claims 1 , during the irradiation step claims 1 , the ions pass through at least the first layer of magnetic material.12. The process according to claim 1 , wherein claim 1 , during the irradiation step claim 1 , the ions bombard the magnetic ...

HIGH RESISTIVITY IRON-BASED, THERMALLY STABLE MAGNETIC MATERIAL FOR ON-CHIP INTEGRATED INDUCTORS

An on-chip magnetic structure includes a palladium activated seed layer and a substantially amorphous magnetic material disposed onto the palladium activated seed layer. The substantially amorphous magnetic material includes nickel in a range from about 50 to about 80 atomic % (at. %) based on the total number of atoms of the magnetic material, iron in a range from about 10 to about 50 at. % based on the total number of atoms of the magnetic material, and phosphorous in a range from about 0.1 to about 30 at. % based on the total number of atoms of the magnetic material. The magnetic material can include boron in a range from about 0.1 to about 5 at. % based on the total number of atoms of the magnetic material. 1. A method for forming an on-chip magnetic structure , the method comprising:activating a magnetic seed layer with palladium, the magnetic seed layer being positioned over a substrate; andelectrolessly plating a soft magnetic alloy onto the palladium in the presence of a magnetic field bias;wherein the soft magnetic alloy comprises nickel in a range from about 0.1 to about 80 at. % based on the total number of atoms of the soft metallic alloy, iron in a range from about 0.1 to about 50 at. % based on the total number of atoms of the soft metallic alloy, and phosphorous in a range from about 0.1 to about 30 at. % based on the total number of atoms in the soft metallic alloy.2. The method of claim 1 , wherein activating the magnetic seed layer comprises exposing the magnetic seed layer to a solution comprising palladium.3. The method of claim 2 , wherein the solution further comprises an acid.4. The method of claim 3 , wherein the palladium is present in an amount in a range from about 45 to about 65 ppm.5. The method of claim 3 , wherein the acid is sulfuric acid claim 3 , hydrochloric acid claim 3 , nitric acid claim 3 , or any combination thereof.6. The method of claim of claim 1 , wherein the soft metallic alloy's resistivity is at least 110 μΩ·cm.7. The ...

ALLOY, MAGNET CORE AND METHOD FOR PRODUCING A STRIP FROM AN ALLOY

An alloy of FeCuNbMTSiBZand up to 1 atomic % impurities; M is one or more of Mo or Ta, T is one or more of V, Cr, Co or Ni and Z is one or more of C, P or Ge, wherein 0.0 atomic % a <1.5 atomic %, 0.0 atomic % b <3.0 atomic %, 0.2 atomic % c 4.0 atomic %, 0.0 atomic % d <5.0 atomic %, 12.0 atomic % Подробнее

APPLIED MAGNETIC FIELD SYNTHESIS AND PROCESSING OF IRON NITRIDE MAGNETIC MATERIALS

Techniques are disclosed concerning applied magnetic field synthesis and processing of iron nitride magnetic materials. Some methods concern casting a material including iron in the presence of an applied magnetic field to form a workpiece including at least one ironbased phase domain including uniaxial magnetic anisotropy, wherein the applied magnetic field has a strength of at least about 0.01 Tesla (T). Also disclosed are workpieces made by such methods, apparatus for making such workpieces and bulk materials made by such methods. 1. A workpiece comprising:at least one anisotropically-shaped iron-based grain, wherein the at least one anisotropically-shaped iron-based grain comprises an aspect ratio of between about 1.1 and about 50, and wherein the aspect ratio is defined as the ratio of the length of a longest dimension to the length of a shortest dimension of the anisotropic grain, where the longest dimension and shortest dimension are substantially orthogonal.2. The workpiece of claim 1 , wherein the at least one anisotropically-shaped iron-based grain defines a shortest dimension of between about 5 nm and about 300 nm.3. The workpiece of claim 1 , wherein the at least one anisotropically-shaped iron-based grain comprises a plurality of anisotropically-shaped iron-based grains claim 1 , and wherein respective long axes of the plurality of anisotropically-shaped iron-based grains are oriented substantially parallel to each other.4. The workpiece of claim 1 , further comprising at least one iron-based phase domain including uniaxial magnetic anisotropy claim 1 , wherein the longest dimension of the at least one anisotropically-shaped iron-based grain is substantially parallel to the direction of the uniaxial magnetic anisotropy.5. The workpiece of claim 1 , wherein the at least one anisotropically-shaped iron-based grain comprises iron-nitride.6. The workpiece of claim 5 , wherein the iron nitride comprises α″-FeN.7. The workpiece of claim 1 , wherein the at ...

METHOD FOR GROUPING OF OPTICAL FIBRES

Present disclosure provides a method for grouping of a plurality of optical fibers using first coating layer and magnetic coating layer. The method of the present disclosure includes the step of coating of each of the plurality of optical fibers with a first coating layer and the step of coating of each of the plurality of optical fibers with a magnetic coating layer. Further, the method includes the step of applying magnetic field over the plurality of optical fibers for grouping of the plurality of optical fibers in a predefined manner. Furthermore, the first coating layer serves as a shock absorber to protect the plurality of optical fibers from physical damage. 1. A method for grouping of a plurality of optical fibers , wherein the plurality of optical fibers is coated with a magnetic coating layer , the method comprising:applying magnetic field to the plurality of optical fibers to arrange the plurality of optical fibers in a predefined arrangement.2. The method as recited in claim 1 , wherein magnetic coating layer consists of magnetic material properties and after coating fibers with magnetic coating later claim 1 , all the fibers are placed in one plane where adjacent fibers attract each other to form a ribbon-like structure.3. The method as recited in claim 1 , wherein at the time of splicing claim 1 , a magnetic generator at cable termination magnetizes splice holder for grouping fibers together which in turn leads to better efficiency and reliability of the magnetic bonds between any two adjacent fibers.4. The method as recited in claim 1 , wherein the magnetic field applied for grouping of a plurality of optical fibers is in range of about 0.05 tesla to 60 tesla.5. The method as recited in claim 1 , wherein thickness of the magnetic coating layer is in range of about 10 microns to 70 microns.6. The method as recited in claim 1 , wherein the magnetic field is applied to the plurality of optical fibers to arrange the plurality of optical fibers in the ...

SYNTHESIS AND ANNEALING OF MANGANESE BISMUTH NANOPARTICLES

The claimed invention provides a wet chemical method to prepare manganese bismuth nanoparticles having a particle diameter of 5 to 200 nm. When annealed at 550 to 600K in a field of 0 to 3T the nanoparticles exhibit a coercivity of approximately 1T and are suitable for utility as a permanent magnet material. A permanent magnet containing the annealed MnBi nanoparticles is also provided. 1. A method to prepare a manganese-bismuth alloy nanoparticle , comprising:treating Mn powder with a hydride reducing agent in an ether solvent with agitation;adding a solution of a bismuth salt of a long chain carboxylate to the Mn-hydride reducing agent mixture while continuing the agitation;upon completion of the bismuth salt solution addition, adding a an organic amine while continuing the agitation; andcontinuing agitation to form aggregated MnBi nanoparticles.21048. The method according to claim 1 , wherein the hydride treatment comprises treatment at 20-25° C. for 10 to 48 hours followed by treatment at 50 to 70° C. for to hours.3. The method according to claim 1 , wherein the hydride reducing agent is lithium borohydride.4. The method according to claim 1 , wherein an equivalent ratio of hydride to Mn is from 1/1 to 100/1.5. The method according to claim 1 , wherein an atom ratio of Mn to Bi is from 10/1 to 1/10.6. A MnBi nanoparticle having a particle size of 5 to 200 nm and a coercivity of approximately 1T claim 1 , wherein the nanoparticle is prepared according to the method of and annealed at 550 to 650K in a field of 0 to 3 T.7. The MnBi nanoparticle according to claim 6 , wherein the annealment is at 600K in a 3 T field.8. A hard magnet comprising a plurality of MnBi nanoparticles according to . This invention is related to the synthesis and preparation of novel materials for use as strong permanent hard magnets. Many of today's advancing technologies require an efficient and strong hard magnet as a basic component of the device structure. Such devices range from ...

METHOD FOR PRODUCING NANOPARTICLES AND THE NANOPARTICLES PRODUCED THEREFROM

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, y.-Fe and magnesium nitride. 1. A method comprising:disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil;activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid;generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; andproducing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles.2. The method of claim 1 , where the electric current interacts with the static magnetic field produced to produce an alternating Lorentz force in the sample to produce melt sonication in the metal and/or ferromagnetic solid.3. The method of claim 1 , where the container comprises iron claim 1 , nickel claim 1 , cobalt claim 1 , chromium claim 1 , aluminum claim 1 , gold claim 1 , platinum claim 1 , silver claim 1 , tin claim 1 , antimony claim 1 , titanium claim 1 , tantalum claim 1 , vanadium claim 1 , hafnium claim 1 , ...

PROCESS FOR PRODUCING MAGNETIC NANOCOMPOSITES AND MAGNETIC NANOCOMPOSITES THEREOF

The invention relates to a method for producing iron oxide-based composite magnetic nanocomposites, for modulating the magnet grade of the magnetic nanocomposites to, for example, a soft magnetic material, or a semi-hard magnetic material, or a hard magnetic material, comprising the following steps:

COMMON MODE FILTER

Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other. 1. A common mode filter comprising:a winding core portion;a first flange portion provided at one end of the winding core portion in an axis direction of the winding core portion;a second flange portion provided at other end of the winding core portion in the axis direction; andfirst and second wires wound around the winding core portion,wherein the first and second wires include first and second closely-wound sections in which the first and second wires are closely wound over a plurality of turns, and a predetermined turn arranged between the first and second closely-wound sections,wherein the predetermined turn has a section in contact with neither the first nor second closely-wound sections,wherein each turn of the first wire in the first closely-wound section is closer to the first flange portion than an associated turn of the second wire in the first closely-wound section, andwherein each turn of the first wire in the second closely-wound section is closer to the second flange portion than an associated turn of the second wire in the second closely-wound section.2. The common mode filter as claimed in claim 1 , wherein the first and second wires are stacked to each other in the first and second closely-wound sections.3. The common mode filter as claimed in claim 2 , wherein the first wire is stacked on the second wire in each of the first and second ...

MAGNETIC SHEET, WIRELESS CHARGING SHEET AND METHOD FOR MANUFACTURING MAGNETIC SHEET

The present invention relates to a magnetic sheet, a wireless charging sheet, and a method for manufacturing a magnetic sheet. According to an embodiment of the present invention, a magnetic sheet used in a wireless charging sheet, which includes a metal sheet layer consisting of a plurality of divided segments; and an insulating material filled in a dividing space between the segments and forms a magnetic path of a magnetic field generated around a coil, is provided. Further, a wireless charging sheet and a method for manufacturing a magnetic sheet are provided. 1. A magnetic sheet used in a wireless charging sheet , comprising:a metal sheet layer consisting of a plurality of divided segments; andan insulating material filled in a dividing space between the segments, wherein the magnetic sheet forms a magnetic path of a magnetic field generated around a coil.2. The magnetic sheet according to claim 1 , wherein each segment of the metal sheet layer is formed by including one alloy ribbon layer or laminating a plurality of alloy ribbon layers with an adhesive layer interposed therebetween claim 1 , wherein the alloy ribbon layer is formed of amorphous and nanocrystalline alloy ribbons.3. The magnetic sheet according to claim 2 , wherein the alloy ribbon is one of sendust claim 2 , permalloy claim 2 , Fe—Si—B claim 2 , Fe—Si—B—Cu—Nb claim 2 , Fe—Zr—B claim 2 , and Co—Fe—Si—B alloy ribbons.4. The magnetic sheet according to claim 1 , wherein a metal material included in the metal sheet layer is at least one of iron claim 1 , nickel claim 1 , aluminum claim 1 , cobalt claim 1 , and zinc claim 1 , andthe insulating material comprises at least one of chlorinated polyethylene (CPE) resins, polypropylene (PP) resins, ethylene propylene rubber (EPR) resins, natural rubber (NR) resins, acrylonitrile-butadiene rubber (NBR) resins, polyvinyl chloride (PVC) resins, polyimide resins, polyester resins, and epoxy resins.5. The magnetic sheet according to claim 1 , wherein the ...

PROCESS FOR PREPARING SCALABLE QUANTITIES OF HIGH PURITY MANGANESE BISMUTH MAGNETIC MATERIALS FOR FABRICATION OF PERMANENT MAGNETS

A scalable process is detailed for forming bulk quantities of high-purity α-MnBi phase materials suitable for fabrication of MnBi based permanent magnets. 1. A process for preparing a high-purity α-MnBi magnetic material , comprising:melting a selected ratio of manganese (Mn) metal and bismuth (Bi) metal together that is greater in manganese (Mn) metal than in bismuth (Bi) metal to form an alloy comprising between about 40 wt % and about 50 wt % α-MnBi material and residual fractions of unreacted manganese (Mn) metal and unreacted bismuth (Bi) metal therein;heat treating the alloy in an oxygen-free or reducing gas atmosphere in a dual-temperature regime at selected temperatures and selected pressures for a time sufficient to increase the fraction or purity of α-MnBi material therein to at least about 60 wt %;milling the composite alloy to agglomerate unreacted manganese (Mn) metal and unreacted bismuth (Bi) metal together, and to fracture the at least about 60 wt % purity α-MnBi magnetic material therein; andvacuum heat treating the fractured α-MnBi magnetic material in a vacuum at a vacuum pressure and temperature to obtain an alloy product with a fraction or purity of α-MnBi phase magnetic material therein of at least about 90 wt %.2. The process of claim 1 , wherein the melting is performed in an arc melter or an induction melter.3. The process of claim 1 , wherein the melting yields a composite alloy in the form of a solid pellet or solid ingot.4. The process of claim 1 , wherein heat treating the composite alloy includes:i) heating the composite alloy at a first temperature less than or equal to about 266° C. in an oxygen-free gas atmosphere for a time up to about 8 hours to form α-MnBi phase material therein; andii) heating the composite alloy at a second temperature between about 266° C. and about 358° C. in an oxygen-free atmosphere for a time up to about 5 hours sufficient to form a selected quantity of β-MnBi material in the composite alloy.5. The process ...

METHOD FOR PRODUCING NANOPARTICLES AND THE NANOPARTICLES PRODUCED THEREFROM

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, γ-Fe and magnesium nitride. 123-. (canceled)24. An article comprising:a crucible having an interior side comprising a crucible material, said interior size having a surface that is at least partially degraded; anda composition disposed within the crucible, the composition comprising: a plurality of first abrasive particles comprising an abrasive particle material; and', 'a plurality of second particles comprising: one or more carbide particles comprising the crucible material and the abrasive particle material; and one or more alloy particles comprising the reaction product of the conductive material and the crucible material., 'a conductive material;'}25. The article of claim 24 , wherein the crucible material is a metal or alloy of one or more of: transition metals; alkali metals; alkaline earth metals; lanthanides; actinides;poor metals; or any combination thereof.26. The article of claim 24 , wherein the crucible material comprises a metal or alloy of one or more of: nickel; cobalt; chromium; aluminum; gold; platinum; iron; silver; tin; antimony; titanium; tantalum; vanadium; hafnium; palladium; cadmium; zinc; ...

COMMON MODE FILTER

Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other. 1. A coil component comprising:a core having first and second edges extending in an axial direction; andfirst and second wires wound around the core in a plurality of turns including first, second, third, fourth, and fifth turns in this order,wherein the third turn of the first and second wires cross each other,wherein the second and third turns of the first wire are apart from each other on the first edge to form a first space,wherein the third and fourth turns of the first wire are apart from each other on the second edge to form a second space,wherein the second turn of the second wire contacts with the first and second turns of the first wire, andwherein the fourth turn of the second wire contacts with the fourth and fifth turns of the first wire.2. The coil component as claimed in claim 1 ,wherein the core includes a first surface located between the first and second edges, andwherein the third turn of the first and second wires cross each other on the first surface.3. The coil component as claimed in claim 2 , wherein the first surface has a third space located between the second turn of the first wire and the third turn of the first and second wires.4. The coil component as claimed in claim 3 , wherein the third space is connected to the first space.5. The coil component as claimed in claim 4 , wherein the third space increases in width in the axial ...

Mn-X-BASED MAGNETIC MATERIAL

Mn—X based magnetic materials (such as a binary Mn—X-based magnetic material, a ternary Mn—X-based magnetic material, a quaternary Mn—X-based magnetic material, or a quinary Mn—X-based magnetic material), wherein X denotes at least one element of Al, Bi, Ga, and Rh, are described herein. The Mn—X based magnetic materials can comprise particles having a particle size of 20 μm or less, wherein the particles comprise uniformly mixed constituent elements. 1. A magnetic material comprising: a binary , ternary , quaternary , or quinary Mn—X-based magnetic material , wherein X comprises at least one element of Al , Bi , Ga , and Rh , and wherein the magnetic material comprises particles having a particle size of 20 μm or less , wherein the particles contain uniformly mixed constituent elements.2. The magnetic material according to claim 1 , wherein the particles comprise MnBi in a low-temperature phase.3. The magnetic material according to claim 1 , wherein the particles exhibit single domain magnetization behavior.4. The magnetic material according to claim 1 , wherein the particles have a thickness of 400 nm or more.5. The magnetic material according to claim 1 , wherein the magnetic material has a uniaxial magnetic anisotropy constant of 0.9×10erg/cc or more at a temperature in the range of 0° C. to 127° C. claim 1 , a coercive force of 13 kOe or more at a temperature in the range of 0° C. to 127° C. claim 1 , a saturation magnetization of 400 emu/cc or more at room temperature claim 1 , or a combination thereof. This invention was made with government support under Grant No. CMMI-1229049 awarded by the National Science Foundation. The government has certain rights in the invention.The present disclosure relates generally to a magnetic material, such as a manganese (Mn) based magnetic material having improved saturation magnetization and coercive force.Magnetic materials are used in devices in a wide range of fields, such as magnetic recording media, tunneling magneto- ...

Non-Rare Earth Magnets Having Manganese (MN) and Bismuth (BI) Alloyed with Cobalt (CO)

Permanent and soft magnets that do not depend on rare-earth elements have suitable magnetic properties for electric motor and generator applications. Both saturation magnetization and magneto-crystalline anisotropy of a manganese-bismuth (Mn—Bi) permanent (hard) magnet are increased by alloying the Mn—Bi magnet with cobalt (Co) or cobalt-iron (Co—Fe). Such magnets do not include rare-earth and precious metals (e.g., platinum), which are expensive and often limited in supply, but offer high magneto-crystalline anisotropy and magnetization. Therefore, a relatively high maximum energy product (BH)is achieved. 1. A magnetic alloy , comprising:{'b': '12', 'manganese ();'}{'b': '13', 'bismuth (); and'}{'b': '22', 'cobalt (),'}wherein a material phase of the alloy is metallic.2. The metallic alloy of claim 1 , wherein the metallic magnetic material is free of rare-earth metals3. The metallic alloy of claim 1 , further comprising iron.4. The metallic alloy of claim 3 , wherein the metallic alloy is free of rare-earth metals.5. A method claim 3 , comprising:forming a magnet having a material phase that is metallic,{'b': 12', '13', '22, 'wherein the forming comprises alloying manganese (), bismuth (), and cobalt ().'}6. The method of claim 5 , wherein the magnet is free of rare-earth metals.7. The method of claim 5 , wherein the forming further comprises alloying iron with the manganese claim 5 , bismuth claim 5 , and cobalt.8. The method of claim 6 , wherein the magnet is free of rare-earth metals. This is the national stage application of and claims priority to International Application No. PCT/US2013/036772, entitled “Non-Rare Earth Magnets having Manganese (Mn) and Bismuth (Bi) Alloyed with Cobalt (CO)” and having an international filing date of Apr. 16, 2013, which is incorporated herein by reference. International Application No. PCT/US2013/036772 claims priority to U.S. Provisional Patent Application No. 61/624,817, entitled “Non-Rare Earth Magnets having Manganese (Mn ...

NOISE SUPPRESSION SHEET

A noise suppression sheet includes a metal magnetic layer composed of a FeNi alloy containing 78 to 84 wt % of Ni, the metal magnetic layer having 2 to 8 wt % of Si added thereto. The noise suppression sheet achieves excellent magnetic shielding characteristics. In the noise suppression sheet, particularly, a high electrical resistivity of 70 to 115 μΩ·cm is achieved in the metal magnetic layer, high magnetic permeability is maintained in a high frequency band of about 1 MHz to 10 MHz, and the frequency dependence of the dielectric constant is reduced. 1. A noise suppression sheet comprising a metal magnetic layer composed of a FeNi alloy containing 78 to 84 wt % of Ni , the metal magnetic layer having 2 to 8 wt % of Si added thereto.2. The noise suppression sheet according to claim 1 , wherein a thickness of the metal magnetic layer is less than 10 μm.3. The noise suppression sheet according to claim 1 , further including a non-magnetic metal layer laminated on the metal magnetic layer.4. The noise suppression sheet according to claim 2 , further including a non-magnetic metal layer laminated on the metal magnetic layer.5. The noise suppression sheet according to claim 3 , wherein an electrical resistivity of the metal magnetic layer is 70 to 115 μΩ·cm.6. The noise suppression sheet according to claim 4 , wherein an electrical resistivity of the metal magnetic layer is 70 to 115 μΩ·cm. The present disclosure relates to a noise suppression sheet.In recent years, along with increasing operation speed of a digital circuit in an electronic apparatus, erroneous operation of the electronic apparatus or an adverse effect on a human body caused by noise such as electromagnetic waves generated from the circuit has been deepening. For this reason, development of a noise suppression sheet for suppressing (blocking) noise has been progressed.For example, Japanese Unexamined Patent Publication No. 2004-153213 discloses a noise suppression sheet including a FeNi alloy foil. The ...

IRON NITRIDE MATERIALS AND MAGNETS INCLUDING IRON NITRIDE MATERIALS

The disclosure describes magnetic materials including iron nitride, bulk permanent magnets including iron nitride, techniques for forming magnetic materials including iron nitride, and techniques for forming bulk permanent magnets including iron nitride. 1. A method comprising:heating a mixture including iron and nitrogen to form a molten iron nitride-containing material; and{'sub': '8', 'casting, quenching, and pressing the molten iron nitride-containing material to form a workpiece including at least one FeN phase domain.'}2. The method of claim 1 , wherein casting claim 1 , quenching claim 1 , and pressing comprises continuously casting claim 1 , quenching claim 1 , and pressing the molten iron nitride-containing material to form a workpiece having a dimension that is longer than other dimensions of the workpiece.3. The method of claim 1 , further comprising:milling, in a bin of a rolling mode milling apparatus, a stirring mode milling apparatus, or a vibration mode milling apparatus, an iron-containing raw material in the presence of a nitrogen source to generate a powder including iron nitride, andwherein heating the mixture including iron and nitrogen comprises heating the powder including iron nitride.4. The method of claim 3 , wherein the nitrogen source comprises at least one of ammonium nitrate claim 3 , an amide-containing material claim 3 , or a hydrazine-containing material.5. The method of claim 4 , wherein the at least one of the amide-containing or hydrazine-containing material comprises at least one of a liquid amide claim 4 , a solution containing an amide claim 4 , a hydrazine claim 4 , or a solution containing hydrazine.6. The method of claim 4 , wherein the at least one of the amide-containing or hydrazine-containing material comprises at least one of carbamide claim 4 , methanamide claim 4 , benzamide claim 4 , or acetamide.7. The method of claim 3 , wherein the iron-containing raw material comprises substantially pure iron.8. The method of ...

HARD MAGNETIC ALLOY THIN FILM USED IN HIGH DENSITY PERPENDICULAR MAGNETIC RECORDING MEDIUM

This invention discloses a hard magnetic alloy thin film used in a high density perpendicular magnetic recording medium. This film incorporates a glass substrate and a ferromagnetic layer formed on the glass substrate. The ferromagnetic layer is deposited onto the substrate using a sputtering deposition and an annealing. After annealing, a single-layered ferromagnetic film with high perpendicular magnetic anisotropy is achieved. 1. A hard magnetic alloy thin film used in a high density perpendicular magnetic recording medium , the hard magnetic alloy thin film comprising:a glass substrate; anda ferromagnetic layer formed on the glass substrate,wherein the ferromagnetic layer is formed on the glass substrate by a sputtering process and then annealed to form a single-layered ferromagnetic alloy film with perpendicular magnetic anisotropy,{'sup': '2', 'wherein the sputtering process provides peak power density of 1000-3600 W/cmfor a target, the sputtering process is a high power impulse magnetron sputtering (HIPIMS) process, and the ferromagnetic layer has peaks of Fe ion in a high energy region of 200 nm-400 nm with a plasma spectroscope determining by optical emission spectrometer.'}2. (canceled)3. The hard magnetic alloy thin film in claim 1 , wherein the ferromagnetic layer has thickness of 30-50 nm.4. The hard magnetic alloy thin film in claim 1 , wherein the ferromagnetic layer is annealed at a temperature higher than 550° C. and with a duration of 30 minutes.5. The hard magnetic alloy thin film in claim 1 , wherein the ferromagnetic layer is annealed at a vacuum degree of 1.0×10Torr.6. The hard magnetic alloy thin film in claim 1 , wherein the ferromagnetic layer is Fe-based alloy.7. The hard magnetic alloy thin film in claim 6 , wherein the Fe-based alloy is FePt alloy.8. The hard magnetic alloy thin film in claim 1 , wherein a perpendicular coercivity of the single-layered ferromagnetic alloy film is larger than 6 kOe.9. The hard magnetic alloy thin film in ...

DISPLAY APPARATUS HAVING TRANSPARENT MAGNETIC LAYER, AND FABRICATING METHOD THEREOF

The present application discloses a display apparatus. The display apparatus includes a display module including a first display substrate and a second display substrate facing the first display substrate; and a first substantially transparent magnetic layer and a second substantially transparent magnetic layer both of which on a side of the second display substrate distal to the first display substrate and spaced apart from each other. The first substantially transparent magnetic layer and the second substantially transparent magnetic layer are configured to face each other with their sides having a same magnetic polarity to generate a mutually repulsive force between each other. 1. A display apparatus , comprising:a display module comprising a first display substrate and a second display substrate facing the first display substrate; anda first substantially transparent magnetic layer and a second substantially transparent magnetic layer both of which on a side of the second display substrate distal to the first display substrate and spaced apart from each other;wherein the first substantially transparent magnetic layer is on a side of the second substantially transparent magnetic layer distal to the second display substrate; andthe first substantially transparent magnetic layer and the second substantially transparent magnetic layer are configured to face each other with their sides having a same magnetic polarity to generate a mutually repulsive force between each other.2. The display apparatus of claim 1 , wherein the second substantially transparent magnetic layer is configured to repel the first substantially transparent magnetic layer when a pressure is applied on the first substantially transparent magnetic layer along a direction from the first substantially transparent magnetic layer toward the second substantially transparent magnetic layer claim 1 , thereby reducing deformation in the second display substrate due to the pressure applied on the first ...

COMPOSITE FERRITE SHEET, METHOD OF MANUFACTURING THE SAME, AND ELECTRONIC DEVICE INCLUDING THE SAME

A composite ferrite sheet may include a ferrite sheet, and composite sheets attached to both surfaces of the ferrite sheet, respectively, and having insulating properties. The composite sheet may be formed of a resin containing metal powder particles. The composite ferrite sheet may be easily manufactured and have improved shielding performance. 1. A composite ferrite sheet comprising:a ferrite sheet; andcomposite sheets attached to both surfaces of the ferrite sheet and having insulating properties.2. The composite ferrite sheet of claim 1 , wherein the composite sheets are formed of a resin containing metal powder particles.3. The composite ferrite sheet of claim 2 , wherein the metal powder particles are formed to be flake-shaped.4. The composite ferrite sheet of claim 1 , wherein the ferrite sheet and the composite sheets are formed to have the same thickness.5. The composite ferrite sheet of claim 1 , wherein the ferrite sheet contains NiZnCu or MnZn.6. The composite ferrite sheet of claim 2 , wherein the metal powder particles include at least one of a sendust-based metal claim 2 , a Permalloy-based metal claim 2 , and an amorphous metal.7. A method of manufacturing a composite ferrite sheet claim 2 , comprising:preparing a ferrite sheet; andforming composite sheets having insulating properties on both surfaces of the ferrite sheet.8. The method of manufacturing the composite ferrite sheet of claim 7 , wherein the forming of the composite sheets includes:applying slurry for the composite sheets to the ferrite sheet; androlling the ferrite sheet and the slurry.9. The method of manufacturing the composite ferrite sheet of claim 8 , wherein in the rolling of and the ferrite sheet and the slurry claim 8 , one or more rollers roll the slurry and the ferrite sheet.10. The method of manufacturing the composite ferrite sheet of claim 8 , wherein the slurry for the composite sheets is formed of a resin containing metal powder particles.11. The method of manufacturing ...

HIGH RESISTIVITY IRON-BASED, THERMALLY STABLE MAGNETIC MATERIAL FOR ON-CHIP INTEGRATED INDUCTORS

An on-chip magnetic structure includes a palladium activated seed layer and a substantially amorphous magnetic material disposed onto the palladium activated seed layer. The substantially amorphous magnetic material includes nickel in a range from about 50 to about 80 atomic % (at. %) based on the total number of atoms of the magnetic material, iron in a range from about 10 to about 50 at. % based on the total number of atoms of the magnetic material, and phosphorous in a range from about 0.1 to about 30 at. % based on the total number of atoms of the magnetic material. The magnetic material can include boron in a range from about 0.1 to about 5 at. % based on the total number of atoms of the magnetic material. 1. A method for forming an on-chip magnetic structure , the method comprising:activating a magnetic seed layer with palladium, the magnetic seed layer being positioned over a substrate; andelectrolessly plating a soft magnetic alloy onto the palladium in the presence of a magnetic field bias;wherein the soft magnetic alloy comprises nickel in a range from about 50 to about 80 at % based on the total number of atoms of the soft metallic alloy, iron in a range from about 10 to about 50 at. % based on the total number of atoms of the soft metallic alloy, phosphorous in a range from about 0.1 to about 30 at. % based on the total number of atoms in the soft metallic alloy, and boron in a range from about 0.1 to about 5 at. % based on the total number of atoms of the soft magnetic alloy.2. The method of claim 1 , wherein activating the magnetic seed layer comprises exposing the magnetic seed layer to a solution comprising palladium.3. The method of claim 2 , wherein the solution further comprises an acid.4. The method of claim 3 , wherein the palladium is present in an amount in a range from about 45 to about 65 ppm.5. The method of claim 3 , wherein the acid is sulfuric acid claim 3 , hydrochloric acid claim 3 , nitric acid claim 3 , or any combination thereof.6. ...

Rare earth metal-free hard magnets

The invention relates to hard magnets that include an intermetallic compound having the general compositionXaX′bYcZdwhereX and X′ independently from one another are representative of a 3d transition metal with unpaired electrons;Y is a 4d or 5d transition metal of groups 5, 8, 9, or 10Z is a main group element of groups 13, 14 or 15;a and d independently from one another represent a number between 0.1 and 2.0; andb and c independently from one another represent a number between 0.0 and 2.0; such that a+b+c+d is between 3.0 and 4.0.

MAGNETIC DEVICE

According to one embodiment, a magnetic device includes a first extending magnetic portion, a first conductive portion, a first inserted magnetic portion, and a first intermediate portion. The first extending magnetic portion is conductive, and includes a first magnetic region and a second magnetic region. The first magnetic region extends in a first extending direction, includes a first part, and has a first magnetization being changeable. The second magnetic region extends in the first extending direction, having a magnetization being changeable and different form the first magnetization. The first conductive portion is provided apart from the first part in a stacking direction intersecting the first extending direction. The first inserted magnetic portion is provided between the first conductive portion and the first part, and has a second magnetization being changeable. The first intermediate portion is provided between the first part and the first inserted magnetic portion. 1. A magnetic device comprising: a first magnetic region extending in a first extending direction, the first magnetic region including a first part, the first magnetic region having a first magnetization being changeable,', 'a second magnetic region extending in the first extending direction, the second magnetic region having a magnetization being changeable and different form the first magnetization;, 'a first extending magnetic portion being conductive, the first extending magnetic portion including'}a first conductive portion provided apart from the first part in a stacking direction intersecting the first extending direction;a first inserted magnetic portion provided between the first conductive portion and the first part, the first inserted magnetic portion having a second magnetization being changeable;a first intermediate portion provided between the first part and the first inserted magnetic portion.2. The magnetic device according to claim 1 , whereinthe magnetization of the second ...

COMMON MODE FILTER

A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i−1turn, iturn, and i+1turn. The iturn of the first wire intersects with the iturn of the second wire without intersecting each of the i−1and i+1turns of the second wire. 1. A common mode filter , comprising:a core; and{'sup': th', 'th', 'th, 'first and second wires wound around the core, each of the first and second wires including at least i−1turn, iturn, and i+1turn,'}{'sup': th', 'th', 'th', 'th, 'wherein the iturn of the first wire intersects with the iturn of the second wire without intersecting each of the i−1and i+1turns of the second wire.'}2. The common mode filter as claimed in claim 1 , wherein the iturn of the second wire intersects with the iturn of the first wire without intersecting each of the i−1and i+1turns of the first wire.3. The common mode filter as claimed in claim 2 , wherein the i−1turn of the second wire is arranged between the i−1and the iturns of the first wire claim 2 , and the i+1turn of the second wire is arranged between the iand i+1turns of the first wire.4. The common mode filter as claimed in claim 3 , wherein each of the first and second wires further includes i−2turn and i+2turn claim 3 , the i−1turn of the first wire is arranged between the i−2and i−1turns of the second wire claim 3 , and the i+1turn of the first wire is arranged between the i+1and i+2turns of the second wire.5. The common mode filter as claimed in claim 4 , wherein the i−2turn of the second wire is arranged between the i−2and i−1turns of the first wire claim 4 , and the i+2turn of the second wire is arranged between the i+1and i+2turns of the first wire.6. The common mode filter as claimed in claim 5 , wherein the first and second wires are wound by a bifilar winding in the i−2 claim 5 , i−1 claim 5 , i+1 claim 5 , and i+2turns.7. A common mode filter claim 5 , comprising:a core; and{'sup': th', 'th', 'th, 'first and ...

MAGNETIC MATERIAL

A binary, ternary, quaternary, or quinary Mn—X magnetic material (X represents at least one element selected from Al, Bi, Ga, and Rh) has a thickness of 100 nm or less and exhibits a uniaxial magnetic anisotropy constant of 10erg/cc or higher and a coercive force of 15 kOe or higher in the temperature range of 0° C. or more and 200° C. or less, and a room-temperature saturation magnetization of 400 emu/cc or higher. 1. A binary , ternary , quaternary , or quinary Mn—X magnetic material (X represents at least one element selected from Al , Bi , Ga , and Rh) having a thickness of 100 nm or less and exhibiting a uniaxial magnetic anisotropy constant of 10erg/cc or higher and a coercive force of 15 kOe or higher in the temperature range of 0° C. or more and 200° C. or less , and a room-temperature saturation magnetization of 400 emu/cc or higher.2. The magnetic material according to claim 1 , wherein the magnetic material is formed on an amorphous substrate.3. The magnetic material according to claim 1 , wherein the magnetic material is formed by a sputtering method in an argon atmosphere.4. The magnetic material according to claim 1 , wherein the maximum energy product is 6 MGOe or higher.5. The magnetic material according to claim 2 , wherein the magnetic material is formed by a sputtering method in an argon atmosphere. This disclosure was made with Government Support under Grant No. CMMI-1229049 awarded by the National Science Foundation. The Government has certain rights to this disclosure.The present invention generally relates to magnetic materials. In particular, it relates to a manganese (Mn)-based magnetic material having improved saturation magnetization and coercive force.Magnetic materials are used in devices of a wide variety of fields, such as magnetic recording media, tunneling magneto-resistive elements, magneto-resistive random access memories, and microelectromechanical systems (MEMS). In recent years, these devices have been required to have higher ...

MAGNETIC POWDER, AND MANUFACTURING METHOD THEREOF

A magnetic powder contains magnetic particles, a first coating layer disposed on surfaces of the magnetic particles and containing a first glass, and a second coating layer disposed on the first coating layer and containing a second glass different from the first glass. A method of manufacturing magnetic powder includes preparing magnetic particles, forming a first coating layer containing a first glass on surfaces of the magnetic particles, and forming a second coating layer containing a second glass different from the first glass on the first coating layer. 1. A magnetic powder comprising:magnetic particles;a first coating layer disposed on surfaces of the magnetic particles and containing a first glass; anda second coating layer disposed on the first coating layer and containing a second glass different from the first glass.2. The magnetic powder of claim 1 , wherein the second glass has a softening point lower than that of the first glass.3. The magnetic powder of claim 2 , wherein a difference in the softening point between the first and second glasses is 20° C. or more.4. The magnetic powder of claim 1 , wherein the magnetic particles are formed of an iron (Fe) based alloy.5. The magnetic powder of claim 1 , wherein the magnetic particles have a particle size of 5 μm to 100 μm.6. The magnetic powder of claim 1 , wherein the first and second coating layers have different specific resistance values from each other.7. The magnetic powder of claim 1 , wherein the first and second coating layers are formed by coating the first and second glasses using heat generated by mechanical friction.8. A method of manufacturing magnetic powder claim 1 , the manufacturing method comprising:preparing magnetic particles;forming a first coating layer containing a first glass on surfaces of the magnetic particles; andforming a second coating layer containing a second glass different from the first glass on the first coating layer.9. The method of claim 8 , wherein the first ...

THERMOSETTING COMPOSITION

The present invention relates to a thermosetting composition and a method for curing the same, and provides a thermosetting composition capable of realizing uniform curing physical properties of a cured product. 1. A thermosetting composition comprising:magnetic particles having two or more magnetic domains, wherein the magnetic domains are irregularly arranged when an external magnetic field is absent and are magnetized by an external alternating magnetic field; anda thermosetting resin.2. The thermosetting composition according to claim 1 , wherein the magnetic particles have a coercive force in a range of 1 to 200 kOe.3. The thermosetting composition according to claim 1 , wherein the magnetic particles have a saturation magnetization value at 25° C. in a range of 20 to 150 emu/g.4. The thermosetting composition according to claim 1 , wherein the magnetic particles have an average particle diameter in a range of 20 to 300 nm.5. The thermosetting composition according to claim 1 , wherein the magnetic domains have an average size in a range of 10 to 50 nm.6. The thermosetting composition according to claim 1 , wherein the magnetic particles comprise a compound of Formula 1:{'br': None, 'sub': a', 'b, 'MXO\u2003\u2003[Formula 1]'}wherein M is a metal or a metal oxide, X comprises Fe, Mn, Co, Ni or Zn, and |a×c|=|b×d| is satisfied, where c is a cation charge of X, and d is an anion charge of oxygen.7. The thermosetting composition according to claim 6 , wherein M is Fe claim 6 , Mn claim 6 , Mg claim 6 , Ca claim 6 , Zn claim 6 , Cu claim 6 , Co claim 6 , Sr claim 6 , Si claim 6 , Ni claim 6 , Ba claim 6 , Cs claim 6 , K claim 6 , Ra claim 6 , Rb claim 6 , Be claim 6 , Li claim 6 , Y claim 6 , B claim 6 , or an oxide thereof.8. The thermosetting composition according to claim 6 , wherein the magnetic particles comprise a mixture of compounds of Formula 1 or a compound comprising the compound of Formula 1 doped with an inorganic substance.9. The thermosetting ...

HIGH RESISTIVITY SOFT MAGNETIC MATERIAL FOR MINIATURIZED POWER CONVERTER

An on-chip magnetic structure structure includes a magnetic material comprising cobalt in a range from about 80 to about 90 atomic % (at. %) based on the total number of atoms of the magnetic material, tungsten in a range from about 4 to about 9 at. % based on the total number of atoms of the magnetic material, phosphorous in a range from about 7 to about 15 at. % based on the total number of atoms of the magnetic material, and palladium substantially dispersed throughout the magnetic material. 1. An on-chip magnetic structure , comprising:a magnetic material comprising cobalt in a range from about 80 to about 90 atomic % (at. %) based on the total number of atoms of the magnetic material, tungsten in a range from about 4 to about 9 at. % based on the total number of atoms of the magnetic material, phosphorous in a range from about 7 to about 15 at. % based on the total number of atoms of the magnetic material, and palladium substantially dispersed throughout the magnetic material.2. The on-chip magnetic structure of claim 1 , wherein the magnetic material is substantially amorphous.3. The on-chip magnetic structure of claim 1 , wherein the resistivity of the magnetic material is at least 100 micro-ohm·centimeters (μΩ·cm).4. The on-chip magnetic structure of claim 1 , wherein the magnetic material further comprises a seed layer of one or more metals.5. The on-chip magnetic structure of claim 4 , wherein the one or more metals is nickel claim 4 , cobalt claim 4 , palladium claim 4 , copper claim 4 , titanium claim 4 , or any combination thereof.6. The on-chip magnetic structure of claim 1 , wherein the phosphorous is in a range from about 9 to about 11 at. %.7. The on-chip magnetic structure of claim 1 , wherein the on-chip magnetic structure is a yoke or a coil.820.-. (canceled) The present invention relates to magnetic materials, and more specifically, to magnetic materials for miniaturized power converters.The technologies for power conversion devices are ...

PERMANENT MAGNET COMPRISING A STACK OF N PATTERNS

A permanent magnet includes a stack of N patterns stacked immediately one above the other in a stacking direction, each pattern including an antiferromagnetic layer made of antiferromagnetic material, a ferromagnetic layer made of ferromagnetic material, the directions of magnetization of the various ferromagnetic layers of all the patterns all being identical to one another. At least one ferromagnetic layer includes a first sub-layer made of CoFeB whose thickness is greater than 0.05 nm, and a second sub-layer made of a ferromagnetic material different from CoFeB and whose thickness is greater than the thickness of the first sub-layer. 1. A permanent magnet comprising a stack of N patterns stacked immediately one above the other in a stacking direction , where N is an integer number greater than or equal to two , each pattern comprising:an antiferromagnetic layer made of antiferromagnetic material,a ferromagnetic layer made of ferromagnetic material, the direction of magnetization of the ferromagnetic layer being fixed by an exchange coupling with the antiferromagnetic layer of this pattern, and the direction of magnetization of the ferromagnetic layer of N-1 patterns also being fixed by an exchange coupling with the antiferromagnetic layer of an immediately adjacent pattern in the stack, the directions of magnetization of the various ferromagnetic layers of all the patterns all being identical to one another,wherein at least one ferromagnetic layer comprises:a first sub-layer made of CoFeB whose thickness is greater than 0.05 nm, anda second sub-layer made of a ferromagnetic material different from CoFeB and whose thickness is greater than the thickness of the first sub-layer.2. The magnet according to claim 1 , wherein the first sub-layer is disposed at a distance of greater than or equal to 5 nm from the interface between the ferromagnetic layer of the pattern and the antiferromagnetic layer of the following pattern in the stacking direction claim 1 , so that no ...

COMMON MODE FILTER

A common mode filter includes a core, and first and second wires wound around the core. Each of the first and second wires includes at least i−1turn, iturn, and i+1turn. The iturn of the first wire intersects with the iturn of the second wire without intersecting each of the i−1and i+1turns of the second wire. 1. A common mode filter , comprising:a core; and{'sup': th', 'th', 'th, 'first and second wires wound around the core, each of the first and second wires including at least i−1turn, iturn, and i+1turn,'}{'sup': th', 'th', 'th', 'th, 'wherein the iturn of the first wire intersects with the iturn of the second wire without intersecting each of the i−1and i+1turns of the second wire.'}2. The common mode filter as claimed in claim 1 , wherein the iturn of the second wire intersects with the iturn of the first wire without intersecting each of the i−1and i+1turns of the first wire.3. The common mode filter as claimed in claim 2 , wherein the i−1turn of the second wire is arranged between the i−1and the iturns of the first wire claim 2 , and the i+1turn of the second wire is arranged between the iand i+1turns of the first wire.4. The common mode filter as claimed in claim 3 , wherein each of the first and second wires further includes i−2turn and i+2turn claim 3 , the i−1turn of the first wire is arranged between the i−2and i−1turns of the second wire claim 3 , and the i+1turn of the first wire is arranged between the i+1and i+2turns of the second wire.5. The common mode filter as claimed in claim 4 , wherein the i−2turn of the second wire is arranged between the i−2and i−1turns of the first wire claim 4 , and the i+2turn of the second wire is arranged between the i+1and i+2turns of the first wire.6. The common mode filter as claimed in claim 5 , wherein the first and second wires are wound by a bifilar winding in the i−2 claim 5 , i−1 claim 5 , i+1 claim 5 , and i+2turns.7. A common mode filter claim 5 , comprising:a core; and{'sup': th', 'th', 'th, 'first and ...

HIGH PERFORMANCE PERMANENT MAGNET BASED ON MnBi AND METHOD TO MANUFACTURE SUCH A MAGNET

The invention refers to a method for manufacturing a at least 90% relative density of MnBi comprising permanent magnet (), with a step of synthesizing (ST) an anisotropic low temperature phase (LTP) MnBi powder consisting of crystallite particles (), whereby an aligned and pre-compacted powder is annealed below 628K such that a liquid Bi film () is formed around each of the MnBi particles (). 1. Method for manufacturing a permanent magnet with at least 90% relative density of MnBi , with respect to an originally used amount of an anisotropic low temperature phase MnBi powder , with a first step of synthesizing the anisotropic low temperature phase MnBi powder consisting of crystallite particles; wherebythe powder is filled into a mold, magnetically aligned and pre-compacted under pressure;characterized in thatthe aligned and pre-compacted powder is annealed below the MnBi decomposition temperature of 628 K such that a liquid Bi film is formed around each of the MnBi particles, and afterwards a cooling down is performed for solidifying the liquid Bi film and for bonding the MnBi particles.2. Method according to claim 1 ,characterized in thatafter the synthesizing of the anisotropic low temperature phase MnBi powder it is mixed with an additional powder of ferromagnetic material particles with a high magnetic saturation polarization, in particular of more than 1 T or more than 1.5 T.3. Method according to claim 2 ,characterized in thata mean size of the ferromagnetic material particles is in a range of 5 nm to 50 nm and smaller than MnBi particles.4. Method according to claim 3 ,characterized in thatthe ferromagnetic material particles comprise at least one of the elements Fe and Co, in particular comprise a-iron, cobalt, FeCo alloy or Fe16N2.5. Method according to claim 4 ,characterized in thata mean size of the MnBi crystallite particles is equal to or smaller than a single domain size of MnBi of about 1 μm, in particular smaller than 500 nm or smaller than 100 nm ...

ELECTROLESSLY FORMED HIGH RESISTIVITY MAGNETIC MATERIALS

Present disclosure relates to magnetic materials, chips having magnetic materials, and methods of forming magnetic materials. In certain embodiments, magnetic materials may include a seed layer, and a cobalt-based alloy formed on seed layer. The seed layer may include copper, cobalt, nickel, platinum, palladium, ruthenium, iron, nickel alloy, cobalt-iron-boron alloy, nickel-iron alloy, and any combination of these materials. In certain embodiments, the chip may include one or more on-chip magnetic structures. Each on-chip magnetic structure may include a seed layer, and a cobalt-based alloy formed on seed layer. In certain embodiments, method may include: placing a seed layer in an aqueous electroless plating bath to form a cobalt-based alloy on seed layer. In certain embodiments, the aqueous electroless plating bath may include sodium tetraborate, an alkali metal tartrate, ammonium sulfate, cobalt sulfate, ferric ammonium sulfate and sodium borohydride and has a pH between about 9 to about 13. 1. A magnetic material comprising:a seed layer having a metal selected from the group consisting of: copper, cobalt, nickel, platinum, palladium, ruthenium, iron, a nickel alloy, a cobalt-iron-boron alloy, a nickel-iron alloy, and any combination thereof; anda cobalt-based alloy formed on the seed layer.2. The magnetic material of claim 1 , wherein the cobalt-based alloy comprises an amorphous or a nano-crystalline microstructure.3. The magnetic material of claim 1 , wherein the cobalt-based alloy comprises a CoFeB alloy.4. The magnetic material of claim 1 , wherein the cobalt-based alloy comprises boron in an atomic percentage in the range of between from about 25% to about 45% claim 1 , and ranges therebetween.5. The magnetic material of claim 1 , wherein the magnetic material has a magnetic coercivity in the range from about 0.1 to less than about 10 Oersted (Oe) claim 1 , and ranges therebetween.6. The magnetic material of claim 1 , wherein the cobalt-based alloy has a ...

MAGNETIC MATERIAL AND METHOD OF MANUFACTURING THE SAME

A magnetic material includes a structure in which a first magnetic layer and a second magnetic layer are stacked such that each layer is formed at least partially in a stacking direction by substantially one atomic layer. The first magnetic layer contains Co as a principal component. The second magnetic layer includes at least Ni. The magnetic material has magnetic anisotropy in the stacking direction. Preferably, an atomic arrangement within a film surface of the first magnetic layer and the second magnetic layer has six-fold symmetry.

PERMANENT MAGNET SUITABLE FOR MAGNETIC ANGLE ENCODER

The present invention relates to a permanent magnet suitable for a magnetic angle encoder. The permanent magnet has an annular cylindrical structure and comprises a first permanent magnet unit and a second permanent magnet unit. The first permanent magnet unit and the second permanent magnet unit are geometrically symmetrical with respect to a diametral cross section. The magnetisation intensity of the first permanent magnet unit and the magnetisation intensity of the second permanent magnet unit are parallel to the axial direction of the annular cylinder and are in opposite directions, or the magnetisation intensity of the first permanent magnet unit and the magnetisation intensity of the second permanent magnet unit are perpendicular to the diametral cross section and are parallel to one another and in the same direction.

DISPLAY APPARATUS, PORTABLE TERMINAL, AND OPERATING METHOD OF DISPLAY APPARATUS

A display apparatus includes: a display module including a display panel, a window member on the display panel and having an area greater than an area of the display panel, and a magnetic member attached to at least one of the display panel and the window member; a set bracket under the display module; and an electro permanent magnet fixed to the set bracket. The electro permanent magnet is coupled to the display module in a first mode and decoupled from the display module in a second mode. The display apparatus is configured to enter the second mode from the first mode if an impact equal to or greater than a reference value is applied or is to be applied after a period of time. 1. A display apparatus comprising:a display module comprising a display panel, a window member on the display panel and having an area greater than an area of the display panel, and a magnetic member attached to at least one of the display panel and the window member;a set bracket under the display module; andan electro permanent magnet fixed to the set bracket, the electro permanent magnet being coupled to the display module in a first mode and decoupled from the display module in a second mode,wherein the display apparatus is configured to enter the second mode from the first mode if an impact equal to or greater than a reference value is applied or is to be applied after a period of time.2. The display apparatus of claim 1 , wherein the electro permanent magnet comprises:a first magnetic member;a second magnetic member spaced from the first magnetic member;a first permanent magnet contacting the first and second magnetic members;a second permanent magnet contacting the first and second magnetic members and spaced from the first permanent magnet; anda solenoid surrounding the first permanent magnet.3. The display apparatus of claim 2 , wherein each of the first and second magnetic members comprises a magnetic metal alloy claim 2 , the first permanent magnet comprises an aluminum-nickel- ...

METHOD FOR PRODUCING NANOPARTICLES AND THE NANOPARTICLES PRODUCED THEREFROM

Disclosed herein is a method comprising disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil; activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid; generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; and producing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles. Disclosed herein too is a composition comprising first metal or a first ceramic; and particles comprising carbides and/or nitrides dispersed therein. Disclosed herein too is a composition comprising nanoparticles comprising chromium carbide, iron carbide, nickel carbide, γ-Fe and magnesium nitride. 1. A method comprising:disposing a container containing a metal and/or ferromagnetic solid and abrasive particles in a static magnetic field; where the container is surrounded by an induction coil;activating the induction coil with an electrical current, to heat up the metallic or ferromagnetic solid to form a fluid;generating sonic energy to produce acoustic cavitation and abrasion between the abrasive particles and the container; andproducing nanoparticles that comprise elements from the container, the metal and/or the ferromagnetic solid and the abrasive particles.2. The method of claim 1 , where the electric current interacts with the static magnetic field produced to produce an alternating Lorentz force in the sample to produce melt sonication in the metal and/or ferromagnetic solid.3. The method of claim 1 , where the container comprises iron claim 1 , nickel claim 1 , cobalt claim 1 , chromium claim 1 , aluminum claim 1 , gold claim 1 , platinum claim 1 , silver claim 1 , tin claim 1 , antimony claim 1 , titanium claim 1 , tantalum claim 1 , vanadium claim 1 , hafnium claim 1 , ...

METHOD FOR IMPROVING COERCIVE FORCE OF EPSILON-TYPE IRON OXIDE, AND EPSILON-TYPE IRON OXIDE

An epsilon-type iron oxide having an Fe-site that is substituted with a platinum group element, provided that Fe of a D-site of the epsilon-type iron oxide is not substituted with the platinum group element. 1. An epsilon-type iron oxide , comprising an Fe-site that is substituted with a platinum group element , provided that Fe of a D-site of the epsilon-type iron oxide is not substituted with the platinum group element.2. The epsilon-type iron oxide according to claim 1 , wherein Fe of an A-site of the epsilon-type iron oxide is not substituted with the platinum group element.3. The epsilon-type iron oxide according to claim 1 , wherein the platinum group element is rhodium.4. The epsilon-type iron oxide according to claim 2 , wherein the platinum group element is rhodium. This is a divisional of application Ser. No. 13/499,712 filed Jun. 25, 2012, which is a National Stage Application of PCT/JP2010/067094 filed Sep. 30, 2010, and claims the benefit of Japanese Application No. 2009-228752 filed Sep. 30, 2009. The entire disclosures of the prior applications are hereby incorporated by reference herein in their entirety.The present invention relates to a method for improving a coercive force of epsilon-type iron oxide, being a magnetic material, and the epsilon-type iron oxide.In a field of a magnetic material, there is always a pursuit of a substance having a higher coercive force, responding to a request for a higher density of a magnetic recording for example. In such a pursuit, from a viewpoint of a substance having a high coercive force, an iron-platinum magnetic material is proposed, which is mainly composed of a noble metal and particularly a platinum group element as a main essential content.However, it is disadvantageous to use a material containing a large quantity of platinum group as the main essential content, like the iron-platinum magnetic material. Further, when there is a necessity for using a large quantity of the material mainly composed of the ...

COMMON MODE FILTER

Disclosed herein is a common mode filter that comprises a drum core including a winding core portion and a pair of flange portions provided at both ends of the winding core portion, and first and second wires wound around the winding core portion so as to form a pair-wire for each turn. The first and second wires includes one or a plurality of sparsely-wound portions in which the first and second wires are wound with adjacent pair-wires spaced from each other, and one or a plurality of closely-wound portions in which the first and second wires are wound with adjacent pair-wires in close contact with each other. 1. A common mode filter comprising:a winding core portion extending in a first direction;a first flange portion provided at one end of the winding core portion in the first direction;a second flange portion provided at other end of the winding core portion in the first direction;first and second terminal electrodes provided on the first flange portion, the first and second terminal electrodes being arranged in a second direction crossing the first direction;third and fourth terminal electrodes provided on the second flange portion, the third and fourth terminal electrodes being arranged in the second direction;a first wire wound around the winding core portion, the first wire having one end connected to the first terminal electrode and other end connected to the third terminal electrode; anda second wire wound around the winding core portion, the second wire having one end connected to the second terminal electrode and other end connected to the fourth terminal electrode,wherein the first and second wires cross each other on the winding core portion,wherein the winding core portion has first and second surfaces located on an opposite to each other in the second direction,wherein the first surface is closer to the second and fourth terminal electrodes than the first and third terminal electrodes,wherein the second surface is closer to the first and third ...

PRESERVATION OF STRAIN IN IRON NITRIDE MAGNET

A permanent magnet may include a Fe16N2 phase in a strained state. In some examples, strain may be preserved within the permanent magnet by a technique that includes etching an iron nitride-containing workpiece including Fe16N2 to introduce texture, straining the workpiece, and annealing the workpiece. In some examples, strain may be preserved within the permanent magnet by a technique that includes applying at a first temperature a layer of material to an iron nitride-containing workpiece including Fe16N2, and bringing the layer of material and the iron nitride-containing workpiece to a second temperature, where the material has a different coefficient of thermal expansion than the iron nitride-containing workpiece. A permanent magnet including an Fe16N2 phase with preserved strain also is disclosed. 1. An article comprising:{'sub': 16', '2, 'a strained iron nitride-containing workpiece comprising at least one FeNphase domain; and'}a layer of material that covers at least a portion of an outer surface of the strained iron nitride-containing workpiece, wherein the material has a different coefficient of thermal expansion than the strained iron nitride-containing workpiece, and wherein the layer of material exerts at least one of a tensile force or a compressive force on the strained iron nitride-containing workpiece in at least a direction parallel to an interface between the layer of material and the strained iron nitride-containing workpiece.2. The article of claim 1 , wherein the layer of material has a coefficient of thermal expansion that is higher than the coefficient of thermal expansion of the strained iron nitride-containing workpiece in at least a direction parallel to the interface between the layer of material and strained iron nitride-containing workpiece.3. The article of claim 1 , wherein the strained iron nitride-containing workpiece comprising the at least one FeNphase domain comprises a strained iron nitride-containing nanoparticle comprising at ...

SEPARATION OF MANGANESE BISMUTH POWDERS

A method of increasing volume ratio of magnetic particles in a MnBi alloy includes depositing a MnBi alloy powder containing magnetic particles and non-magnetic particles on a sloped surface having a magnetic field acted thereupon. The method further includes collecting falling non-magnetic particles while separated magnetic particles are magnetically retained on the sloped surface. 1. A method comprising:melting Mn and Bi into homogenous MnBi alloy;annealing the MnBi alloy to form bulk alloy;crushing the bulk alloy into powder; anddirecting the powder onto a sloped surface having a magnetic field acting thereupon such that MnBi particles in the powder remain on the surface and non-magnetic Bi particles in the powder fall from the surface to separate the MnBi particles and non-magnetic Bi particles.2. The method of further comprising vibrating the sloped surface during the directing.3. The method of further comprising adjusting an angle of inclination of the sloped surface during the directing.4. The method of further comprising adjusting a strength of the magnetic field during the directing.5. The method of wherein the directing includes directing the powder onto an apex of the sloped surface.6. The method of wherein the magnetic field is applied to the sloped surface using one or more magnets disposed below the sloped surface.7. The method of wherein the one or more magnets are a plurality of permanent magnets adapted to be moved toward and away from the sloped surface.8. The method of wherein the one or more magnets includes an electromagnet claim 6 , wherein the MnBi particles are magnetically maintained when an electric current is provided to the electromagnet claim 6 , and wherein the MnBi particles are not magnetically maintained when the electric current is reduced.9. The method of claim 1 , wherein the directing includes dropping the powder from a nozzle disposed vertically above at least a portion of the sloped surface.10. The method of wherein the sloped ...

PERMANENT MAGNET ALLOY, METHOD FOR PRODUCING THE SAME, PERMANENT MAGNET, AND METHOD FOR PRODUCING THE SAME

A permanent magnet alloy according to the present disclosure contains Mn at a content not lower than 41% by atom and not higher than 53% by atom; Al at a content not lower than 46% by atom and not higher than 53% by atom; and Cu at a content not lower than 0.5% by atom and not higher than 10% by atom. The alloy contains a stable phase, having a tetragonal structure, at a ratio not lower than 50%. 1. A permanent magnet alloy , comprising:Mn at a content not lower than 41% by atom and not higher than 53% by atom;Al at a content not lower than 46% by atom and not higher than 53% by atom; andCu at a content not lower than 0.5% by atom and not higher than 10% by atom,wherein the permanent magnet alloy contains a stable phase, having a tetragonal structure, at a ratio not lower than 50%.2. The permanent magnet alloy of claim 1 , wherein the permanent magnet alloy comprises:Mn at a content not lower than 44% by atom and not higher than 53% by atom;Al at a content not lower than 46% by atom and not higher than 51.5% by atom; andCu at a content not lower than 0.5% by atom and not higher than 7% by atom.3. The permanent magnet alloy of claim 1 , wherein the permanent magnet alloy comprises:Mn at a content not lower than 45% by atom and not higher than 51.5% by atom;Al at a content not lower than 46% by atom and not higher than 50% by atom; andCu at a content not lower than 0.5% by atom and not higher than 5% by atom.4. The permanent magnet alloy of claim 1 , further comprising C at a content lower than 1% by atom (including 0% by atom).5. The permanent magnet alloy of claim 4 , wherein a total content of Mn claim 4 , Al claim 4 , Cu and C is 100% by atom (the permanent magnet alloy may contain unavoidable impurities).6. A method for producing a permanent magnet alloy claim 4 , comprising: Mn at a content not lower than 41% by atom and not higher than 53% by atom,', 'Al at a content not lower than 46% by atom and not higher than 53% by atom, and', 'Cu at a content not lower ...

이상혼합형 희토류계 영구자석의 제조방법

내용 없음.

Extra-high coercive force permanent magnet with maximum energy product and manufacture therefor

Anisotropic magnet of fe-cr-co and manufacture thereof

Anisotropic r-fe-m-b flake & the process of making the same

내용 없음. No content.

Rare-earth-element-fe-co-b permanent magnet powder excellent in magnetic anisotropy and corrosion resistivity and bonded magnet therefrom

Ti, V, Nb, Ta, Al 및 si 중의 1종류 또는 2종류 이상을 함유시키므로써 H 2 처리만으로도 자기적 이방성과 내식성이 우수한 R-Fe-Co-B계 영구자석분말을 얻을수 있으므로 재결정입자를 편평화하기 위한 일간소성가공 등의 공정이 필요없이 제조비용을 크게 절감할 수 있다.

Alloy magnet and its preparation

Powdery alloy for bonded magnet and bonded magnet

Preparation of thin ribbon-like alnico magnet

Patent JPS56501051A

Rare earth/iron/boron-based permanent magnet alloy composition

분말 야금 공정에 의해서 R-Fe-B계 영구자석 합금 조성물로부터 양호한 자기 이력 곡선의 각형비뿐 아니라, 우수한 보자력과 잔류 자속 밀도를 가진 영구자석이 제공된다. The powder metallurgy process provides a permanent magnet with excellent coercive force and residual magnetic flux density, as well as a good ratio of angular hysteresis curves from the R-Fe-B based permanent magnet alloy composition. 상기의 자석 합금 조성물은; The magnetic alloy composition is; (a) 네오디뮴, 프라세오디뮴, 디스프로슘, 테르븀, 홀뮴으로 이루어진 군으로부터 선택된 희토류 원소 28~35중량%; (a) 28 to 35% by weight rare earth element selected from the group consisting of neodymium, praseodymium, dysprosium, terbium, holmium; (b) 코발트 0.1~3.6중량%; (b) 0.1-3.6 weight percent of cobalt; (c) 붕소 0.9~1.3중량%; (c) 0.9-1.3 weight percent boron; (d) 알루미늄 0.05~1.0중량%; (d) 0.05-1.0 wt% aluminum; (e) 구리 0.02~0.25중량%; (e) 0.02-0.25 weight percent copper; (f) 지르코늄 또는 크롬 0.02~0.3중량%; (f) 0.02-0.3 wt% zirconium or chromium; (g) 탄소 0.03~0.1중량%; (g) 0.03-0.1 weight percent carbon; (h) 산소 0.1~0.8중량%; (h) 0.1 to 0.8 weight percent oxygen; (i) 질소 0.002~0.2중량%; (i) 0.002-0.2 wt% nitrogen; (j) 100중량%에 대한 나머지량의 철 및 불가피한 불순물 원소로 이루어진다. (j) consisting of the remainder of iron and inevitable impurity elements relative to 100% by weight.

Platinum-alloy group composite material magnet

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Fe-cr-co magnet with high coercive force

Permanent magnets and process for making them

Permanent magnets

Device is an electrolytic tank resistant to heat, pressure and electrolysis and is electrically insulated. It contains an electrolytic solution, a cathode and anode placed in an outlet tube. The latter is subjected to an electro-magnetic field. The tank comprises visual chemical and physical controls. Specif. the controls are manometers, thermometers and electrolytic collectors. Very powerful permanent magnets are obtained.

PROCESS FOR IMPROVING MAGNETIC PROPERTIES OF FE-CR-CO ALLOYS

Procédé pour améliorer les propriétés magnétiques d'alliages ternaires Fe-Cr-Co avec une teneur en chrome de 20 à 35 % et une teneur en cobalt de 5 à 25 % en poids, pouvant éventuellement contenir jusqu'à 5 % en poids d'autres éléments. Le procédé consiste à porter l'alliage à une température supérieure à 650 degrés C, puis à le refroidir à raison de 60 à 650 degrés C/heure jusqu'à 585-625 degrés C et ensuite à raison de 2 à 30 degrés C/heure jusqu'à 500-550 degrés C, le cas échéant avec un arrêt de 10 à 60 mn entre 585 et 625 degrés C. Les alliages magnétiques obtenus conviennent pour la confection d'aimants permanents. Process for improving the magnetic properties of ternary Fe-Cr-Co alloys with a chromium content of 20 to 35% and a cobalt content of 5 to 25% by weight, which may optionally contain up to 5% by weight of other elements. The process consists of bringing the alloy to a temperature above 650 degrees C, then cooling it at a rate of 60 to 650 degrees C / hour to 585-625 degrees C and then at a rate of 2 to 30 degrees C / hour up to 500-550 degrees C, if necessary with a stop of 10 to 60 minutes between 585 and 625 degrees C. The magnetic alloys obtained are suitable for making permanent magnets.

Permanent anisotropic magnet

Improvements in the manufacturing process of permanent magnets with an anisotropic crystalline structure

Patent FR2269583A1

Process for the manufacture of anisotropic crystal-oriented permanent magnets from a cobalt-iron-nickel-aluminum-titanium-copper alloy

Process for obtaining an anisotropic magnet

Low-cost rare-earth-free nanocomposite permanent-magnetic material and preparation method thereof

本发明提供一种低成本无稀土纳米复合永磁材料及其制备方法。低成本无稀土纳米复合永磁材料的化学分子式为Mn 53‑x Al 45 C 2 W x /(Fe 1‑ y Co y ) 2 B。制备方法是：将纯金属原料按Mn 53‑ x Al 45 C 2 W x 合金名义配料，获得母合金锭子，并制成薄带；将快淬带进行真空热处理，获得τ相Mn 53‑x Al 45 C 2 W x 合金；按照(Fe 1‑y Co y ) 2 B合金成分配料，获得母合金锭子，并制成薄带；将热处理后的Mn 53‑x Al 45 C 2 W x 合金快淬带和(Fe 1‑y Co y ) 2 B合金快淬带进行高能球磨，制成纳米晶合金粉末；将获得的纳米复合粉末放电等离子烧结制得全致密的纳米复合永磁材料；将经烧结的纳米复合永磁材料进行热变形，提高取向度，获得低成本无稀土各向异性无稀土纳米复合永磁材料。本发明制备的永磁材料不含稀土元素，有效降低原料成本，同时工艺简单，易于操作，适合于大规模批量化生产。

Magnet manufacturing method

The rare earth-transition metal-boron based permanent alloy is produced by (a) adding calcium or calcium hydroxide to the mixed powder comprising rare earth oxide, transition metal boron or boron oxide, (b) preparing alloy powder reduced and diffused by heating the mixed powder at 1,000-1,200 deg.C in inert gas or vacuum atmosphere, (c) transforming calcium component into calcium oxide by heating the mixed powder with water to the temperature of ambience or evaporation(about 580 deg.C) in vacuum, (d) pulverizing the mixture to be fine particle and separating, removing calcium component from it with drying.

Method of manufacturing manganese-bismuth permanent magnet

The present invention relates to a MnBi magnet having a composition of, considering the whole MnBi magnet as 100 at%, 50 to 52 at% of Mn, 47 to 49 at% of Bi, and residual impurities, wherein the MnBi magnet, with respect to the total phase of the magnet being 100%, has 95% or more of ferromagnetic phase.

Strontium-ferrite magnetic materials

내용 없음. No content.

Patent DE3104214C2

An improved steel for making magnets

189,924. Watanabe, S. Oct. 5, 1921. Alloys.-A self-hardening steel alloy for permanent magents contains 1-5 per cent of chromium, 1-3 per cent of manganese, and 0.5-1 per cent of carbon, with or without the addition of one or more of the following elements : tungsten, cobalt, molybdenum, vanadium, silicon, copper, nickel, aluminium, uranium, zirconium, boron.

Novel magnetic material and preparation method thereof

本发明涉及一种新型磁性材料及其制备方法。本发明的制备方法，包括：将富含芳香环的有机物/生物分子与二价金属离子混合反应后制得具有常温超强顺磁性的磁性材料。本发明基于芳香环与离子之间的离子‑π相互作用，使新型磁性材料在常温下具有超强顺磁性。该制备方法原料来源广，分子结构可设计，自组装结构可调控。而且有效避免了铁磁性物质的添加，具有良好的生物相容性，可广泛应用于磁靶向药物、核磁共振成像、磁性转染等领域。

A kind of method that organic light rare earth complex modification prepares high-coercivity manganese bismuth magnetic powder

本发明公开了一种有机轻稀土配合物纳米颗粒改性制备高矫顽力锰铋磁粉的方法，按下列步骤进行：按照MnBi合金成分配料，获得合金铸锭并快淬成薄带；将MnBi快淬薄带进行真空热处理并对其进行高能预球磨，然后加入有机轻稀土配合物纳米颗粒，并通过高能球磨使轻稀土配合物纳米颗粒有效包覆MnBi磁粉，最终获得有机轻稀土配合物纳米颗粒改性的高矫顽力锰铋磁粉。本发明通过高能球磨使轻稀土离子替换到MnBi合金的分子晶格里，有效提升MnBi相的磁晶各向异性，使获得的MnBi合金磁粉的矫顽力提高40~90%。同时，本发明工艺过程简单，易操作，降低了成本，有利于高矫顽力锰铋磁粉在更多永磁器件中的应用，以满足市场需求。

Patent JPH0335801B2

Patent FR2003248A1

Patent FR2256517B1

Patent JPS5933644B2

POWDER ALLOY FOR COMPOSITE MAGNETS AND COMPOSITE MAGNETS

Manufacture of high coercive-forced permanent magnet with maximum energy product

Rare earth-free manganese-based permanent magnet electroplating solution and preparation method thereof

本发明涉及电镀技术领域，具体涉及一种无稀土锰基永磁体电镀液及其制备方法。所述电镀液包括以下质量浓度的组分：钴盐1‑5g/L、硼酸20‑60 g/L、次亚磷酸钠20‑55 g/L、络合剂15‑45 g/L、抗坏血酸1‑5 g/L、氯化锰35‑65 g/L、氯化铋2‑10 g/L，余量为去离子水。该电镀液的稳定性好，且使用该电镀液电镀得到的合金镀层色泽美观、磁性能好。

Permanent magnetic alloy and method of manufacturing the same

A permanent magnetic alloy essentially consists of 10 to 40% by weight of R, 0.1 to 8% by weight of boron, 50 to 300 ppm by weight of oxygen and the balance of iron, where R is at least one component selected from the group consisting of yttrium and the rare-earth elements. An alloy having this composition has a high coercive force IHC and a high residual magnetic flux density and therefore has a high maximum energy product.

Magnetic scale material

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Process for producing a magnetic alloy

Method of forming ferrous alloys

Manufacture of ferromagnetic body

Anisotropic iron nitride permanent magnet

本文公开了永磁体，包含：多个排列的氮化铁纳米颗粒，其中氮化铁纳米颗粒包括α”‑Fe 16 N 2 相域；其中对于排列的氮化铁纳米颗粒，α”‑Fe 16 N 2 (004)X射线衍射峰与α”‑α”‑Fe 16 N 2 (202)X射线衍射峰的积分强度之比大于至少7％，其中衍射矢量平行于排列方向，并且其中氮化铁纳米颗粒显示平行于所述排列方向测量的矩形比大于垂直于所述排列方向测量的矩形比。

Permanent magnetic alloy and method of manufacturing the same

Permanent magnets having a plurality of openings therein

Thin magnet alloy belt and resin-bonded magnet

A thin magnet alloy belt obtained by the molten metal quenching method, wherein an areal ratio of dimples (22) in the surface (rolling surface) thereof in contact with a cooling roll when the thin alloy belt is solidified is specified, thus providing a magnet-use thin alloy belt having stable magnetic properties, and a bonded magnet with excellent magnetic properties and corrosion resistance by using the powder produced by pulverizing the belt.

Method for improving coercive force of epsilon-type iron oxide

To provide a method for improving a coercive force of epsilon-type iron oxide particles. Specifically, to provide a method for improving the coercive force of an epsilon-type iron oxide comprising: substituting Fe-site of the epsilon-type iron oxide with other element, while not substituting Fe of D-site in the epsilon-type iron oxide with other element, and the epsilon type iron oxide.

Rare-earth-element-fe-b permanent magnet powder excellent in magnetic anisotropy and corrosion resistivity and bonded magnet therefrom

Ti, V, Nb, Ta, Al, 및 Si 중의 1종류 또는 2종류 이상을 함유시키므로써, H 2 만으로도 자기적 이방성과 내식성이 우수한 R-Fe-B계 영구자석분말을 얻을 수 있으므로 재결정입자를 편평화하기 위한 열간소성가공등의 공정이 필요없어 제조비용을 크게 절감할수 있다. By containing one or two or more of Ti, V, Nb, Ta, Al, and Si, the R-Fe-B permanent magnet powder having excellent magnetic anisotropy and corrosion resistance can be obtained with H 2 alone, so that recrystallized particles It is possible to reduce manufacturing costs by eliminating the need for hot firing for flattening.

Sintered anisotropic permanent magnet

Manufacture of heat-sensitive element

Patent JPS6111444B2

PROCESS FOR PROCESSING A MAGNETIC STRUCTURE

Cobalt-aluminum magnetic materials with high coercive force

Magnetic materials having large coercive force consist essentially of 66 to 95% by weight of Co, 5 to 25% by weight of Al, and a small but effective amount of at least one of Ti, Mo, Cr, V and W, the amount of the third metal being effective to increase the coercive force substantially above the coercive force of the same Co-Al alloy without that third metal.

High energy ball milling method for making rare earth- transition metal-boron permanent magnets

HIGH ENERGY BALL MILLING METHOD FOR MAKING RARE EARTH-TRANSITION METAL-BORON PERMANENT MAGNETS Abstract of the Disclosure Fully crystalline forms of rare earth-transition metal-boron compositions can be attrited under high-energy conditions (such as high energy ball milling) to product homogeneous alloy with crystals smaller than single magnetic domain size. Such alloy can be annealed or hot formed to produce permanent magnets with high magnetic energy products.

Production of ferromagnetic metallic powder

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Manufacture of fe-cr-co hard magnetic material

(57)【要約】 【課題】 Ｆｅ−Ｃｒ−Ｃｏ系硬磁性材料の多種・多様 な用途に容易にかつ高精度に対応できるように、材料組 成を変えることなく、硬磁性材料としての磁気特性を制 御できる製造方法を提供する。 【解決手段】 重量％でＣｒ２０〜４０％、Ｃｏ５〜３ ０％及び残部が実質的にＦｅよりなるＦｅ−Ｃｒ−Ｃｏ 系硬磁性材料を溶体化熱処理し、続いてスピノーダル分 解熱処理及び濃度差拡大熱処理する製造方法において、 前記溶体化熱処理として９５０〜１２５０℃の温度で５ 分以内の短時間で熱処理を行う製造方法。

Low-cost rare earth-free magnetic material and preparation method thereof

本发明涉及一种低成本无稀土磁性材料及其制备方法，属于磁性材料技术领域。本发明的低成本无稀土磁性材料按重量百分比计的化学式为：Fe bal B 0.9～1.1％ M1 x M2 y ，其中M1为Ga、Al中的一种或两种，M2为Cr、Mn、Co、Ni、Cu、Ti、Zr、Nb、Mo、Tc、Ru、Rh、Pd、Ag中的一种或几种，x的范围为0.01～10％，y的范围为0～5.8％。本发明的低成本无稀土磁性材料不含稀土元素，成本低，磁性能较现有的钕铁硼磁性材料接近，可以单独制成磁体使用或与钕铁硼磁性材料配合制成双相耦合磁体使用。