Method and apparatus for magneto-optical recording using a demag

Details Method and apparatus for magneto-optical recording using a demag Method and apparatus for magneto-optical recording using a demag

1990-10-09

1992-02-25

Levy, Stuart S.

Dynamic information storage or retrieval

Storage or retrieval by simultaneous application of diverse...

Magnetic field and light beam

360 59, 360114, 365122, G11B 1304, G11B 1112

Patent

active

050918966

ABSTRACT:
A method and an apparatus for MO recording that allow real overwrite by light power modulation with a combination of a storage medium consisting of a single-layer RE-TM film and a single-laser source. The medium has a Curie temperature not less than about 500.degree. C. and has high saturation magnetization around 200.degree. C. The coercive force drops to a level that allows the magnetization to be reversed by the demagnetization field at around 200.degree. C.

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patent: 4995024 (1991-02-01), Arimune et al.
Shieh et al., "Operating Margins for Magneto-Optic Recording Materials with Direct Overwrite Capability", IEEE Transactions, on Magnetics, vol. MAG-23, No. 1, Jan. 1987, pp. 171-173.
Takayama et al., "Magnetic and Magneto-Optical Properties of Tb-Fe-Co Amorphous Films", J. Appl. Phys. 61(7). Apr. 1, 1987, pp. 2610-2616.

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