| 简介 |
PROBLEM TO BE SOLVED : To provide a perpendicular magnetic recording patterned medium excellent in heat stability while reducing a write-in magnetic field in a bit area, with less occurrence of a reversed magnetic domain in a position control information area of a head.
SOLUTION : The perpendicular magnetic recording patterned medium includes : a nonmagnetic substrate 2; a soft magnetic base layer 3 formed on the nonmagnetic substrate; a nonmagnetic intermediate layer 4 formed on the soft magnetic base layer; and a perpendicular magnetic recording layer 7 which is formed on the nonmagnetic intermediate layer and has a layered structure of a CoPt based crystalline film 5 whose Pt content is 5 to 35 at.% and a rare earth-transition metal alloy amorphous film 6 formed on this CoPt based crystalline film, wherein the CoPt based crystalline film and rare earth-transition metal alloy amorphous film are exchange coupled and the perpendicular magnetic recording layer makes an arrangement of a patterned fine shape.
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