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.: US668300Application Date: 1984-11-05
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Publication No.: US4622273APublication Date: 1986-11-11
- Inventor: Keishi Nakashima , Takashi Hatanai , Koichi Mukasa
- Applicant: Keishi Nakashima , Takashi Hatanai , Koichi Mukasa
- Applicant Address: JPX
- Assignee: Alps Electric Co., Ltd.
- Current Assignee: Alps Electric Co., Ltd.
- Current Assignee Address: JPX
- Priority: JPX58-206909 19831105
- Main IPC: G11B5/64
- IPC: G11B5/64 ; G11B5/65 ; G11B5/66 ; G11B5/667 ; G11B5/706 ; G11B5/716 ; C22C19/07 ; H01F10/16
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 hafnium, cobalt being a main component with chromium and hafnium added thereto.
Public/Granted literature
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Information query
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