Magnetooptical recording method for overwriting information on a

Details Magnetooptical recording method for overwriting information on a Magnetooptical recording method for overwriting information on a

1996-03-05

1997-07-29

Hindi, Nabil

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

G11B 700

Patent

active

056527381

ABSTRACT:
A magnetooptical recording method for overwriting information on a magnetooptical recording medium, which has a first magnetic layer and a second magnetic layer having a larger coercive force and a lower Curie temperature than those of the first magnetic layer, comprises an initialization step of initializing magnetization of the first magnetic layer in one direction, a first recording step of radiating a light beam by repeating radiation and non-radiation states of the laser beam, while applying a bias magnetic field after the initialization step, a second recording step of continuously radiating a light beam while applying a bias magnetic field in a direction opposite to the one direction after the initialization step, and a step of selecting one of the first and second recording steps in accordance with recording information.

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