Patent Number: 6,165,608

Title: Magnetic recording medium

Abstract: A magnetic recording medium of the present invention comprises:a substrate; anda 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.

Inventors: Tamari; Kousaku (Hiroshima, JP), Doi; Takanori (Hatsukaichi, JP), Kakihara; Yasuo (Hiroshima, JP), Nakata; Kenichi (Otake, JP)

Assignee: Toda Kogyo Corporation

International Classification: G11B 5/64 (20060101); G11B 5/851 (20060101); G11B 5/84 (20060101); G11B 005/66 ()

Expiration Date: 12/26/2013