Dynamic information storage or retrieval – Storage or retrieval by simultaneous application of diverse... – Magnetic field and light beam
Patent
1997-10-30
1999-10-12
Neyzari, Ali
Dynamic information storage or retrieval
Storage or retrieval by simultaneous application of diverse...
Magnetic field and light beam
428694EC, G11B 1100, G11B 1110
Patent
active
059663499
ABSTRACT:
A magneto-optical recording medium capable of performing light-intensity-modulation direct overwrite and having excellent practical characteristics is provided. A magneto-optical recording film is formed by stacking a reproducing layer made of a magnetic material from which a large Kerr rotation angle can be obtained, a memory layer made of a magnetic material having great magnetic anisotropy, an intermediate layer having small magnetic anisotropy and made of TMrich rare earth-transition metal amorphous alloy, a recording layer having a Curie temperature higher than those of the memory layer and the intermediate layer and made of TMrich rare earth-transition metal amorphous alloy, a switching layer made of a magnetic material having a Curie temperature lower than that of the recording layer and an initializing layer made of a magnetic material having a Curie temperature higher than those of the reproducing layer, the memory layer, the intermediate layer, the recording layer and the switching layer.
REFERENCES:
patent: 5418076 (1995-05-01), Shiratori
patent: 5449566 (1995-09-01), Fujii et al.
patent: 5740133 (1998-04-01), Tamanoi et al.
Fukushima Yoshihito
Muto Yoshihiro
Suwabe Masatsugku
Neyzari Ali
Sony Corporation
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