Exchange-coupled magnetooptical recording medium with first laye

Details Exchange-coupled magnetooptical recording medium with first laye Exchange-coupled magnetooptical recording medium with first laye

1994-07-19

1996-04-02

Thibodeau, Paul J.

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428694MM, 428694LE, 428611, 428615, 428655, 428656, 360131, 365122, 369 13, B32B 516, G11B 566

Patent

active

055039243

ABSTRACT:
An overwritable magneto-optical recording medium is disclosed. The recording medium comprises a first magnetic layer exhibiting vertical magnetic anisotropy and a second magnetic layer having a higher Curie temperature and a lower coercive force at room temperature in comparison with the first magnetic layer and exchange coupled with the first magnetic layer, wherein the second magnetic layer exhibits in-plane magnetic anisotropy and vertical magnetic anisotropy at room temperature and the vertical magnetic anisotropy relative to the in-plane magnetic anisotropy becomes larger in the vicinity of the Curie temperature of the first magnetic layer than at room temperature.
Further, a recording method using the magneto-optical recording medium is also disclosed.

REFERENCES:
patent: 4727005 (1988-02-01), Sato

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