Static information storage and retrieval – Information masking – Polarization
Patent
1984-07-17
1986-12-09
Moffitt, James W.
Static information storage and retrieval
Information masking
Polarization
360131, 428692, G11B 2300, G11C 1142
Patent
active
046284850
ABSTRACT:
A magneto-optical recording medium comprising: a recording layer of a magnetic thin film low in the Curie temperature or magnetic compensation temperature and high in coersive force and having an easy axis of magnetization in a direction perpendicular to the film surface; a reproducing layer disposed adjacent the recording layer and large in the magnetic Kerr rotation angle and having an easy axis of magnetization in a direction perpendicular to the film surface; and a transparent substrate disposed on the side of incidence of light. In accordance with the present invention, a reflecting metal layer is provided for reflecting light having entered from the side of the transparent substrate and passed through the recording layer and the reproducing layer. A dielectric layer may be further disposed at least on one side of the transparent substrate or the reflecting metal layer with respect to the recording layer and the reproducing layer. The order of the recording layer and the reproducing layer may be replaced by each other.
REFERENCES:
patent: 4497006 (1985-01-01), Deguchi et al.
patent: 4559573 (1985-12-01), Tanaka et al.
Imamura Nobutake
Nagao Yasuyuki
Tanaka Fujio
Adams Bruce L.
Burns Robert E.
Kokusai Denshin Denwa Kabushiki Kaisha
Lobato Emmanuel J.
Moffitt James W.
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