Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1988-10-31
1990-12-25
Levy, Stuart S.
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
3692752, 428694, 360131, G11B 724, G11B 562
Patent
active
049808753
ABSTRACT:
A Magneto-Optical disk having a transparent substrate, a Magneto-Optical film formed on the transparent substrate and a high corrosion-resistant film laminated on the Magneto-Optical film. The Magneto-Optical film is made of a perpendicular magnetic anisotropy material, the corrosion-resistant film is made of a metal or metal alloy. A foundation protecting layer may be formed on the transparent substrate with the Magneto-Optical film and the corrosion resistant film formed thereon. The Magneto-Optical film may be a plurality of films laminated alternately with a plurality of corrosion-resistant films.
REFERENCES:
patent: 4680742 (1987-07-01), Yamada et al.
patent: 4789606 (1988-12-01), Yamada et al.
Homma Jun-ichi
Ishiwata Nobuyuki
Ito Susumu
Matsumoto Takayuki
Okumura Toshiyuki
Levy Stuart S.
NEC Home Electronics Ltd.
Nguyen Hoa T.
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