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AssigneeHoya Corporation
InventorsHiroshi Tomiyasu, Teiichiro Umezawa, Genshichi Hata, Takashi Morikawa, Masato Kobayashi, Masashi Suzuki, Satoshi Yokota, Tsuyoshi Watanabe
Estimating the term…
There is disclosed a magnetic recording medium in which a seed layer, under layer, intermediate layer, first magnetic layer, nonmagnetic layer, second magnetic layer, protective layer, and lubricant layer are successively laminated on a glass substrate, the nonmagnetic layer is constituted of an alloy containing Cr and C, and the magnetic layer is constituted of an alloy containing Co and Pt. The under layer includes at least the seed layer for finely dividing the crystal particles of the magnetic layer, the seed layer includes at least two or more layers of nonmagnetic films, and the intermediate layer formed of the material different from that of the nonmagnetic film is interposed between the nonmagnetic films. In measurement of the thermal stability of the magnetic recording medium, a head is used, the head includes a read/write element, and a write track width is twice or more as large as a read track width in the head.
A magnetic recording medium including at least a magnetic layer on a substrate, wherein:
A magnetic recording medium including at least a magnetic layer on a substrate, wherein:
A magnetic recording medium including two or more magnetic layers on a substrate, and including a nonmagnetic layer between at least one pair of said magnetic layers, wherein:
Dependencies are inferred from the claim text.