Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1992-02-07

1993-11-23

Pascal, Robert J.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, 360114, G11B 1110, G11B 502

Patent

active

052650740

ABSTRACT:
A magneto-optic recording and reproducing medium is formed of a reproduction layer composed mainly of GdFeCo and having a saturation magnetization of at least 450 emu/cc and a coercive force of not more than 4 kOe, and a recording layer composed mainly of TbFeCo, having a coercive force of at least 5 kOe, and having a magnetization of not more than 300 emu/cc when it is a transition metal-predominant film and not more than 200 emu/cc when it is a rare earth-predominant film.

REFERENCES:
patent: 4995024 (1991-02-01), Arimune et al.
patent: 5018119 (1991-05-01), Aratani et al.
patent: 5132945 (1992-07-01), Osato et al.
patent: 5143798 (1992-09-01), Fujii
patent: 5168482 (1992-12-01), Aratani et al.

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