Magneto-optical recording medium, and information recording/repr

Details Magneto-optical recording medium, and information recording/repr Magneto-optical recording medium, and information recording/repr

1997-03-05

1998-06-30

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

428694EC, G11B 1100

Patent

active

057744297

ABSTRACT:
A magneto-optical recording medium includes a substrate on which light is incident, a first magnetic layer provided at the substrate side, and a second magnetic layer provided on the first magnetic layer. The first magnetic layer is an in-plane magnetization film at room temperature and becomes a perpendicular magnetization film at a temperature between room temperature and a Curie temperature thereof. The second magnetic layer has a Curie temperature lower than that of the first magnetic layer and is a perpendicular magnetization film. The direction of magnetization of the first magnetic layer is anti-parallel to the direction of magnetization of the second magnetic layer in a state in which the first magnetic layer and second magnetic layer are stable with respect to each other by exchange-coupling.

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