发明授权
- 专利标题: Magnetic recording medium
- 专利标题(中): 磁记录介质
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申请号: US11698081申请日: 2007-01-26
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公开(公告)号: US08007931B2公开(公告)日: 2011-08-30
- 发明人: Hoo-san Lee , Chee-kheng Lim , Hoon-sang Oh , Sok-hyun Kong
- 申请人: Hoo-san Lee , Chee-kheng Lim , Hoon-sang Oh , Sok-hyun Kong
- 申请人地址: KR Suwon-si
- 专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人: Samsung Electronics Co., Ltd.
- 当前专利权人地址: KR Suwon-si
- 代理机构: Sughrue Mion, PLLC
- 优先权: KR10-2006-0022323 20060309
- 主分类号: G11B5/66
- IPC分类号: G11B5/66
摘要:
A perpendicular magnetic recording medium including: a substrate; a perpendicular magnetic recording layer disposed over the substrate; a soft magnetic underlayer disposed between the substrate and the perpendicular magnetic recording layer; a shunting layer disposed under the soft magnetic underlayer; and an isolation layer disposed between the soft magnetic underlayer and the shunting layer and providing magnetic isolation between the shunting layer and the other layers disposed over the shunting layer are provided. The shunting layer is magnetically separated from the other magnetic layers disposed over the shunting layer, and shunts a magnetic field generated by the magnetic domain walls of the soft magnetic underlayer such that the magnetic field cannot reach a magnetic head, thereby increasing a signal-to-noise ratio (SNR).
公开/授权文献
- US20070212575A1 Magnetic recording medium 公开/授权日:2007-09-13
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