Invention Grant
- Patent Title: Magnetic recording medium
- Patent Title (中): 磁记录介质
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Application No.: US12234608Application Date: 2008-09-19
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Publication No.: US08277961B2Publication Date: 2012-10-02
- Inventor: Sadayuki Watanabe
- Applicant: Sadayuki Watanabe
- Applicant Address: JP
- Assignee: Fuji Electric Co., Ltd.
- Current Assignee: Fuji Electric Co., Ltd.
- Current Assignee Address: JP
- Agency: Rossi, Kimms & McDowell LLP
- Priority: JP2007-245760 20070921
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A magnetic recording medium for thermally assisted recording is disclosed which achieves both high density writing and good control of temperature characteristics. The magnetic recording medium for thermally assisted recording comprises an underlayer, a magnetic recording layer, and a protective layer sequentially laminated on a nonmagnetic substrate. The magnetic recording layer has a structure composed of two magnetic layers and an exchange coupling control layer inserted between the magnetic layers, the two magnetic layers being magnetically coupled through the exchange coupling control layer. The coupling energy Jw in the process of writing a signal and the coupling energy Jr in the state of retaining a signal satisfy a relation 0
Public/Granted literature
- US20090081484A1 MAGNETIC RECORDING MEDIUM Public/Granted day:2009-03-26
Information query
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