Invention Grant
- Patent Title: Perpendicular magnetic recording medium
- Patent Title (中): 垂直磁记录介质
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Application No.: US12596440Application Date: 2008-03-06
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Publication No.: US08475947B2Publication Date: 2013-07-02
- Inventor: Akira Sato , Shunji Takenoiri , Yasushi Sakai
- Applicant: Akira Sato , Shunji Takenoiri , Yasushi Sakai
- Applicant Address: JP Kawasaki-Shi
- Assignee: Fuji Electric Co., Ltd.
- Current Assignee: Fuji Electric Co., Ltd.
- Current Assignee Address: JP Kawasaki-Shi
- Agency: Rabin & Berdo, P.C.
- Priority: JP2007-110748 20070419; JP2008-030357 20080212
- International Application: PCT/JP2008/054089 WO 20080306
- International Announcement: WO2008/132880 WO 20081106
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A perpendicular magnetic recording medium, which includes a first magnetic recording layer, a second magnetic recording layer, and a third magnetic recording layer disposed sequentially on a nonmagnetic substrate, and a coupling layer formed between the first and second magnetic recording layers. The first, second and third magnetic recording layers have an easy axis of magnetization in a direction perpendicular to a film plane of the nonmagnetic substrate. The first and second magnetic recording layers are ferromagnetically coupled via the coupling layer.
Public/Granted literature
- US20100167093A1 PERPENDICULAR MAGNETIC RECORDING MEDIUM Public/Granted day:2010-07-01
Information query
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