Thin-film storage disk and method
Номер патента: CA1261465A
Опубликовано: 26-09-1989
Автор(ы): Atef H. Eltoukhy, Rick C. Price
Принадлежит: Xidex Corp
Опубликовано: 26-09-1989
Автор(ы): Atef H. Eltoukhy, Rick C. Price
Принадлежит: Xidex Corp
Реферат: THIN-FILM STORAGE DISK AND METHOD Abstract A method of producing a thin-film magnetic disk having high coercivity and magnetic remanence, good loop squareness, and low fluctuation in peak-to-peak recording signal amplitude over an entire circular recording path. The novel aspects of the method which contribute to the performance characteristics of the disk are (a) layering a 300-1,000 .ANG. magnetic film containing between about 70-88% cobalt, 10-28% nickel, and 2-12% chromium over a 1,000-4,000 .ANG. chromium underlayer; (b) forming the film and underlayer under sputtering deposition conditions which prevent low-angle asymmetrical sputtering; and (c) shielding the disk substrate during sputtering in a manner which produces substantially uniform-thickness deposition.
Bilayer carbon overcoating for magnetic data storage disks and magnetic head/slider constructions
Номер патента: US5858182A. Автор: Jei-Wei Chang,Cheng Tzong Horng. Владелец: Headway Technologies Inc. Дата публикации: 1999-01-12.