发明授权
- 专利标题: Magnetic recording medium, method of manufacturing the same, and magnetic recording and reproduction apparatus
- 专利标题(中): 磁记录媒体及其制造方法以及磁记录再生装置
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申请号: US10630751申请日: 2003-07-31
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公开(公告)号: US07141315B2公开(公告)日: 2006-11-28
- 发明人: Kenji Shimizu , Akira Sakawaki , Hiroshi Sakai , Takashi Hikosaka , Futoshi Nakamura
- 申请人: Kenji Shimizu , Akira Sakawaki , Hiroshi Sakai , Takashi Hikosaka , Futoshi Nakamura
- 申请人地址: JP Tokyo JP Tokyo
- 专利权人: Showa Denko K.K.,Kabushiki Kaisha Toshiba
- 当前专利权人: Showa Denko K.K.,Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2002-223199 20020731
- 主分类号: G11B5/66
- IPC分类号: G11B5/66 ; G11B5/70
摘要:
A magnetic recording medium includes a nonmagnetic substrate on which is provided at least a soft magnetic under-film, an orientation control film that controls an orientation of a film directly above, a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate and a protective film, wherein the orientation control film is alloy containing at least Cr and C. The magnetic recording medium is manufactured by a method including carrying out, in order, at least a step of forming a soft magnetic under-film on a nonmagnetic substrate, a step of forming an orientation control film that controls an orientation of a film directly above, a step of forming a perpendicular magnetic recording film having an axis of easy magnetization oriented to be mainly perpendicular to the substrate, and a step of forming a protective film. A magnetic recording and reproduction apparatus includes the magnetic recording medium and a magnetic head that records and reproduces information on the magnetic recording medium, wherein the magnetic head is a magnetic monopole head.
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