Magneto-optical recording medium having multiple magnetic layers

Details Magneto-optical recording medium having multiple magnetic layers Magneto-optical recording medium having multiple magnetic layers

1995-08-24

1997-01-28

Epps, Georgia Y.

Dynamic information storage or retrieval

Storage medium structure

Optical track structure

369 13, 428694ML, G11B 724, G11B 1100

Patent

active

055983995

ABSTRACT:
A magneto-optic recording medium comprises on a substrate the first dielectric substance layer, a magneto-optic recording layer, the second dielectric substance layer and a reflective layer. The magneto-optic recording layer has, in the range of the Curie temperature Tc to (Tc-50) .degree.C., a value of a product of a saturated magnetization Ms and a coercive force Hc of not more than 4.times.10.sup.4 erg/cm.sup.3. The magneto-optic recording medium can be recorded at a magnetic field as low as 100 (Oe) with an excellent C/N.

REFERENCES:
patent: 5153868 (1992-10-01), Fujinaga
patent: 5225289 (1993-07-01), Kobayashi
patent: 5418076 (1995-05-01), Shiratori
patent: 5481410 (1996-01-01), Osato et al.

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