Magnetooptical recording medium having a bias layer related by C

Details Magnetooptical recording medium having a bias layer related by C Magnetooptical recording medium having a bias layer related by C

1996-10-10

1999-09-07

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

059497432

ABSTRACT:
A magnetooptical recording medium has a stack of layers and is capable of being overwritten by light modulation. The recording medium has a writing layer in which information bits can be written, and a bias layer which generates a leaky magnetic field for writing information bits in the writing layer. The bias layer has a Curie temperature that is in the range of from (T.sub.2 -90.degree. C.) to (T.sub.2 +5.degree. C.), where T.sub.2 is the Curie temperature of the writing layer, and the bias layer has a saturation magnetization at ambient temperature that is at least 350 emu/cc.

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