Magneto-optical recording medium

Details Magneto-optical recording medium Magneto-optical recording medium

1988-06-15

1989-06-13

Sheehan, John P.

Metal treatment

Stock

Magnetic

420 83, 420416, 420435, 420581, 428928, H01F 104

Patent

active

048389625

ABSTRACT:
A magneto-optical recording medium comprising a perpendicularly magnetized amorphous film made of an alloy of the formula: (R.sub.1-x M.sub.x).sub.a (Fe.sub.1-y Co.sub.y).sub.100-a, wherein R is at least one of La, Ce, Pr, Nd, Sm, Ho, Er and Yb; M is at least one of Tb, Gd and Dy; 0.ltoreq.x<0.5; 0<y<1; and 10.ltoreq.a.ltoreq.40, is large in the Kerr rotation angle, excellent in coercivity and affords a larger read output-to-noise ratio (C/N).

REFERENCES:
patent: 4126494 (1978-11-01), Imamura et al.
patent: 4152486 (1979-05-01), Imamura et al.
patent: 4467383 (1984-08-01), Chita et al.
patent: 4556291 (1985-12-01), Chen
patent: 4569381 (1986-02-01), Freese et al.

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