Domain-wall-displacement-type magnetooptical recording medium

Details Domain-wall-displacement-type magnetooptical recording medium Domain-wall-displacement-type magnetooptical recording medium

2007-02-06

2007-02-06

Neyzari, Ali (Department: 2627)

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

C369S013470, C369S013080

Reexamination Certificate

active

10718600

ABSTRACT:
A domain-wall-displacement-type magnetooptical recording medium is provided in which a floating magnetic field from a surrounding portion that operates on a recording/reproducing portion is suppressed. The recording medium includes a displacement layer having a composition such that rare-earth-element sub-lattice magnetization is dominant at room temperature, a switching layer, a memory layer, and a magnetization compensation layer in which iron-family-element sub-lattice magnetization is dominant at room temperature, for suppressing generation of a stray magnetic field at a temperature near room temperature.

REFERENCES:
patent: 6027825 (2000-02-01), Shiratori et al.
patent: 6345016 (2002-02-01), Shiratori
patent: 6894954 (2005-05-01), Aoki
patent: 2002/0106534 (2002-08-01), Aoki
patent: 2003/0175554 (2003-09-01), Miyakoshi
patent: 2003/0189878 (2003-10-01), Miyakoshi
patent: 6-290496 (1994-10-01), None
Shiratori et al., “High-Density Magneto-optical Recording with Domain Wall Displacement Detection”, J. Mag. Soc. Jpn., vol. 22, Suppl. No. 52 (1998), pp. 47-50.
Shiratori et al., “High-Density Magneto-optical . . . Detection”, J. Magn. Soc. Jpn., vol. 22, Suppl. 52 (1998), pp. 47-50.

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