Stock material or miscellaneous articles – Composite – Of inorganic material
Patent
1995-06-07
1997-10-21
Kiliman, Leszek
Stock material or miscellaneous articles
Composite
Of inorganic material
428694SC, 428694MT, 428694MM, 428694EC, 428694GR, 428900, 360135, 365122, 369 14, 369 15, 369288, 430945, G11B 566, G11B 1300, G11C 1306
Patent
active
056794746
ABSTRACT:
A magneto-optical recording medium with wide operating margins is disclosed.
The magneto-optical recording medium includes a vertical magnetic films of exchange-coupled liminated structure composed of a first magnetic layer with a high coercive force H.sub.H and a low Curie temperature T.sub.L and a second magnetic layer with a lower coercive force H.sub.L and a higher Curie temperature T.sub.H in comparison with those of the first magnetic layer. The first magnetic layer has a gradient of the Curie temperature along the direction of thickness of the layer so that the Curie temperature is higher at a position closer to the second magnetic layer.
The recording method utilizing the recording medium according to the present invention is also disclosed.
REFERENCES:
patent: 4293621 (1981-10-01), Togami
patent: 4645722 (1987-02-01), Katayama
patent: 4670356 (1987-06-01), Sato et al.
patent: 4882231 (1989-11-01), Aratani
Webster's New World Dictionary; 3d College Edition NY, 1988; p. 946.
Canon Kabushiki Kaisha
Kiliman Leszek
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