Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1998-09-29

2000-12-26

Kiliman, Leszek

Stock material or miscellaneous articles

Web or sheet containing structurally defined element or...

Physical dimension specified

428336, 428694T, 428900, G11B 566

Patent

active

061656089

ABSTRACT:
A magnetic recording medium of the present invention comprises:
a substrate; and
a cobalt-containing maghemite thin film formed on said substrate, containing cobalt at a molar ratio of cobalt to iron of not more than 0.06:1, having either a spacing of a (311) plane of not more than 2.510 .ANG., a spacing of a (222) plane of not more than 2.415 .ANG. or a spacing of a (220) plane of not more than 2.950 .ANG., and having a coercive force of not less than 1,800 Oe.
Such a magnetic recording medium has as high a coercive force as possible, specifically not less than 1,800 Oe, and exhibits an excellent stability independent to change in passage of time and a large output in a high recording frequency region.

REFERENCES:
patent: 5601908 (1997-02-01), Tamari
patent: 5851582 (1998-12-01), Tamari

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