Invention Grant
- Patent Title: Recording medium for perpendicular magnetization
- Patent Title (中): 用于垂直磁化的记录介质
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Application No.: US668299Application Date: 1984-11-05
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Publication No.: US4603091APublication Date: 1986-07-29
- Inventor: Koichi Mukasa , Takashi Hatanai , Keishi Nakashima
- Applicant: Koichi Mukasa , Takashi Hatanai , Keishi Nakashima
- Applicant Address: JPX
- Assignee: Alps Electric Co., Ltd.
- Current Assignee: Alps Electric Co., Ltd.
- Current Assignee Address: JPX
- Priority: JPX58-206910 19831105
- Main IPC: G11B5/64
- IPC: G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/667 ; C22C19/07
Abstract:
A magnetic recording medium for perpendicular magnetization includes a base of a nonmagnetic material, a first magnetic layer of a soft magnetic material on a surface of the base, a second magnetic layer having perpendicular anisotropy on a surface of the first magnetic layer, the second magnetic layer being magnetized in a transverse direction thereof. The second magnetic layer is composed of a three-element alloy of cobalt, chromium, and tantalum, cobalt being a main component with chromium and tantalum added thereto.
Public/Granted literature
- US5746742A Bone plate template Public/Granted day:1998-05-05
Information query
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