Magneto-optical recording medium and reproducing method for the

Details Magneto-optical recording medium and reproducing method for the Magneto-optical recording medium and reproducing method for the

1995-11-14

1999-10-12

Kiliman, Leszek

Stock material or miscellaneous articles

Composite

Of inorganic material

428694SC, 428694MM, 428694EC, 428694IS, 428900, 369 13, 369272, 369283, 369288, G11B 566

Patent

active

059652853

ABSTRACT:
A magneto-optical recording medium having first magnetic layer and second magnetic layers respectively serving as recording and reproduction layers. When an exchange-coupled force is induced between the layers, the reproducing layer takes on an identical magnetization direction as the recording layers permitting the data stored in the recording layer to be reproduced via the reproducing layer. An intermediate layer formed between the first and second magnetic layers is formed of an antiferromagnetic and has a N.epsilon.el temperature higher than the temperature at which the reproducing layer mirrors the magnetization direction of the recording layer. A medium in accordance with the present invention may also include a third magnetic layer for controlling the recording and erasing of data from the first layer, and a fourth magnetic layer for holding a magnetization direction during a data erasing operation.

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patent: 5580667 (1996-12-01), Lal et al.
patent: 5666346 (1997-09-01), Mishimura

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