Magneto-optic information-carrying medium including three magnet

Details Magneto-optic information-carrying medium including three magnet Magneto-optic information-carrying medium including three magnet

1990-03-08

1991-05-14

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

428694, 428900, 360131, 365122, G11B 724, G11B 1304, G11B 1112

Patent

active

050162322

ABSTRACT:
A magneto-optic information-carrying medium comprises three magnetic layers. A magnetic bias field is generated by a third layer which is premagnetized in the direction parallel to the thickness thereof.

REFERENCES:
patent: 3521294 (1970-07-01), Treves
patent: 4293621 (1981-10-01), Togami
patent: 4649519 (1987-03-01), Sun et al.
patent: 4670356 (1987-06-01), Sato et al.
patent: 4799114 (1989-01-01), Tsunashima
patent: 4855975 (1989-08-01), Akasaka et al.
patent: 4871614 (1989-10-01), Kobayashi
J. S. Judge et al., "Magnetic Memory Device Utilizing Coupled Film", vol. 10, No. 2, Jul. 1967 of IBM Technical Disclosure Bulletin, pp. 144-145.
"Single Beam Over Write Method Using Multipayered Magneto Optical Media", 28p-ZL-3, Extended Abstracts (The 34th Meeting) The Japan Society of Applied Physics & Related Societies, 3/28/87.

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