Invention Grant
- Patent Title: Magnetic recording medium, process for producing same, and magnetic recording reproducing apparatus
- Patent Title (中): 磁记录介质,其制造方法和磁记录再现装置
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Application No.: US12663350Application Date: 2008-06-06
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Publication No.: US08012613B2Publication Date: 2011-09-06
- Inventor: Migaku Takahashi , Shin Saito , Tomoyuki Maeda , Akihiko Takeo , Yuzo Sasaki , Ryuji Sakaguchi
- Applicant: Migaku Takahashi , Shin Saito , Tomoyuki Maeda , Akihiko Takeo , Yuzo Sasaki , Ryuji Sakaguchi
- Applicant Address: JP Tokyo JP Tokyo JP Miyagi
- Assignee: Showa Denko K.K.,Toshiba Corporation,Tohoku University
- Current Assignee: Showa Denko K.K.,Toshiba Corporation,Tohoku University
- Current Assignee Address: JP Tokyo JP Tokyo JP Miyagi
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-149900 20070606
- International Application: PCT/JP2008/060498 WO 20080606
- International Announcement: WO2008/149998 WO 20081211
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A magnetic recording medium is provided, which has at least one soft magnetic layer, at least one seed layer, at least one underlayer and at least one perpendicular magnetic recording layer, and is characterized in that the or each seed layer is comprised of a covalently bonded material. The covalently bonded material preferably predominantly comprises a nitride having a hexagonal crystal structure, more preferably, predominantly comprises aluminum nitride having a hexagonal wurtzite crystal structure. This magnetic recording medium is superior in recording and reproducing an information with high density.
Public/Granted literature
- US20100173175A1 MAGNETIC RECORDING MEDIUM, PROCESS FOR PRODUCING SAME, AND MAGNETIC RECORDING REPRODUCING APPARATUS Public/Granted day:2010-07-08
Information query
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