发明授权
- 专利标题: Magnetic recording head with nano scale pole tip bulge
- 专利标题(中): 磁记录头带有纳米级极尖凸起
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申请号: US13315098申请日: 2011-12-08
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公开(公告)号: US08520336B1公开(公告)日: 2013-08-27
- 发明人: Feng Liu , Tao Pan , Zhigang Bai , Yugang Wang , Sining Mao
- 申请人: Feng Liu , Tao Pan , Zhigang Bai , Yugang Wang , Sining Mao
- 申请人地址: US CA Fremont
- 专利权人: Western Digital (Fremont), LLC
- 当前专利权人: Western Digital (Fremont), LLC
- 当前专利权人地址: US CA Fremont
- 主分类号: G11B5/127
- IPC分类号: G11B5/127
摘要:
A perpendicular magnetic recording head for use in a hard disk drive has a main pole that has a main pole tip in proximity to an air bearing surface. The main pole tip has a first width at the ABS, extending distally at a first angle measured from the plane of the ABS to a second width measured at a first distance from the ABS. The main pole tip extends distally at a second angle measured from the plane of the ABS from the second width to a third width, wherein the second angle is less than the first angle. The main pole tip extends distally at a third angle measured from the plane of the ABS from the third width to a fourth width, wherein the third angle is greater than the second angle. The first distance is between 25 and 100 nanometers.
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