Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1998-04-07

2000-01-25

Pianalto, Bernard

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

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428694RE, 428694EC, 428694TM, 428900, B05D 304

Patent

active

060176202

ABSTRACT:
The invention is directed at a magneto-optical recording medium which is directly overwritable by light intensity modulation, does not require an initializing magnet, and has on the surface side of a substrate four magnetic layers, a memory layer M.sub.1, a writing layer W.sub.2, a switching layer S.sub.3, and an initializing layer I.sub.4. The magnetic layers each contain a rare earth element and a transition element, have perpendicular magnetic anisotropy at room temperature, and satisfy the relationships:

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