Perpendicular magnetic storage medium

Details Perpendicular magnetic storage medium Perpendicular magnetic storage medium

1989-03-22

1991-09-03

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428900, G11B 2300

Patent

active

050454129

ABSTRACT:
A perpendicular magnetic storage medium in which a perpendicular magnetic anisotropic film having an easy magnetization axis perpendicular to the plane thereof is formed on a substrate, wherein the perpendicular magnetic anisotropic film is a film of a sub-oxide of Fe-Co alloy, the sub-oxide has a half-value width not less than 0.7 degrees with respect to a diffracted X-ray peak caused by oxide phase observed in X-ray diffraction spectrum, and saturation magnetization in terms of 4.pi.Ms of the film is within a range from 6,000 Gauss to 13,000 Gauss. The medium has high recording/reproducing sensitivity, high recording density and high wear resistance, and can be produced easily and economically at a low substrate temperature.

REFERENCES:
patent: 4362767 (1982-12-01), Nouchi et al.
patent: 4726988 (1988-02-01), Oka et al.
patent: 4797330 (1989-01-01), Nasu

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