G - Physics – 11 – B
Patent
G - Physics
11
B
42/2
G11B 11/00 (2006.01) G11B 11/10 (2006.01) G11C 13/06 (2006.01)
Patent
CA 2020374
ABSTRACT In accordance with the present invention, there are provided magnetooptical recording media having a first protective film, a magnetooptical recording film, and a second protective film and a metallic film laminated on a substrate in that order, the first and second protective films being composed of SiNx, the magnetooptical recording film being composed of an amorphous alloy film having a magnetic easy axis perpendicular to the film and containing (i) at least one metal selected from among 3d transition metals, (ii) at least one metal selected from a corrosion- resistant metals and (iii) at least one element selected from among rare earth elements, the content of said corrosion-resistant metal being 5-30 atom%, and said metallic film being composed of an aluminum alloy. These magnetooptical recording media thus provided are excellent in oxidation resistance and magnetooptical recording characteristics and also broad in recording power margin and small in dependence on linear velocity of recording sensitivity.
Hashimoto Hidehiko
Kurisu Masayoshi
Mizumoto Kunihiko
Shindo Kiyotaka
Todo Akira
Hashimoto Hidehiko
Kurisu Masayoshi
Mitsui Petrochemical Industries Ltd.
Mizumoto Kunihiko
Shindo Kiyotaka
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