Magneto-optical recording medium having first and second magneti

Details Magneto-optical recording medium having first and second magneti Magneto-optical recording medium having first and second magneti

1993-11-17

1995-05-30

Epps, Georgia Y.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360114, 428694ML, G11B 1100

Patent

active

054208335

ABSTRACT:
A magneto-optical recording medium is composed of a first magnetic layer and a second magnetic layer, which are overlaid, each having a perpendicular magnetic anisotropy, and the first magnetic layer having a Curie temperature of Tc.sub.1, a saturation magnetization of Ms.sub.1, a coercive force of Hc.sub.1, and a thickness of t.sub.1, the second magnetic layer having a compensation temperature of Tcomp.sub.2, a Curie temperature Tc.sub.2, and a coercive force of Hc.sub.2, and which satisfies the relationships:

REFERENCES:
patent: 5132945 (1992-07-01), Osato et al.
patent: 5233575 (1993-08-01), Uchino et al.
patent: 5239524 (1993-08-01), Sato et al.
patent: 5265073 (1993-11-01), Osato

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