Magneto-optical recording method having constant recording sensi

Details Magneto-optical recording method having constant recording sensi Magneto-optical recording method having constant recording sensi

1994-09-02

1995-12-05

Neyzari, Ali

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

428694RE, 428694EC, 360114, G11B 1100

Patent

active

054735823

ABSTRACT:
A magneto-optical recording medium includes a magnetizable amorphous alloy film having a perpendicular magnetic anisotropy to the film surface. The film is formed from rare earth metals and transition metal, such that the film has a Curie point that increases as the proportion of the transition metals increases. A magneto-optical recording method includes establishing a recording magnetic field and magneto-optically recording onto the film such that even if there are compositional changes in the film, little influence on recording sensitivity results.

REFERENCES:
patent: 4995024 (1991-02-01), Arimune et al.
patent: 5239524 (1993-08-01), Sato et al.
D. Raasch, "Recording Characteristics of Dy-FeCo-Based Magneto-Optical Disks in Comparison to Other MO Materials", IEEE Transactions on Magnetics, vol. 29, Jan., 1993, N.Y. pp. 34-40.
T. K. Hatwar et al., "Correlation of Composition And Angular Uniformity With Performance in Magneto-Optic Disk Prepared From Alloy Targets", Journal of Applied Physics, vol. 67, May 1, 1990, N.Y., pp. 5304-5306.
K. Nagato et al., "Compositional Dependence of Recording Noise In Amorphous Rare-Earth-Transition-Metal Magneto-Optical Disks", Journal of Applied Physics, vol. 63, Apr. 15, 1988, N.Y., pp. 3856-3858.

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