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US 5,851,656 AGranted
Magnetic recording medium
AssigneeFuji Electric Co., Ltd.
InventorKeiji Ohkubo
Life of this patent
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Abstract
A magnetic recording medium is provide which includes at least a base layer and a multiple-film magnetic layer formed on a substrate. The multiple-film magnetic layer includes two to six magnetic films formed of a material selected from CoNiCrTa alloy, CoCrPt alloy and CoCrTaPt alloy. The magnetic films are laminated on each other with a non-magnetic intermediate layer interposed between each pair of the magnetic films. The non-magnetic intermediate film is formed of a Cr alloy containing an element selected from Mo, Ta, Ti and W.
Claims14
A magnetic recording medium, comprising:
- a substrate;
- a base layer formed on said substrate;
- and
- a multiple-film magnetic layer formed on said base layer, said multiple-film magnetic layer comprising two to six magnetic films formed of a material selected from the group consisting of a CoNiCrTa alloy, a CoCrPt alloy and a CoCrTaPt alloy, said magnetic films being laminated on each other with a non-magnetic intermediate film interposed between adjacent ones of the magnetic films, said non-magnetic intermediate film being formed of a Cr alloy containing an element selected from the group consisting of Mo in a range of 2 at % to 12 at %, Ta in a range of 2 at % to 12 at %, Ti in a range of 2 at % to 15 at % and W in a range of 1 at % to 20 at %.
1 more element
Dependencies are inferred from the claim text.