发明授权
- 专利标题: Magnetic head for perpendicular magnetic recording having side shield layer and method of manufacturing same
- 专利标题(中): 具有侧屏蔽层的垂直磁记录用磁头及其制造方法
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申请号: US12318412申请日: 2008-12-29
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公开(公告)号: US08270110B2公开(公告)日: 2012-09-18
- 发明人: Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Shigeki Tanemura , Kazuo Ishizaki , Takehiro Horinaka
- 申请人: Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Shigeki Tanemura , Kazuo Ishizaki , Takehiro Horinaka
- 申请人地址: US CA Milipitas
- 专利权人: Headway Technologies, Inc.
- 当前专利权人: Headway Technologies, Inc.
- 当前专利权人地址: US CA Milipitas
- 代理机构: Oliff & Berridge PLC
- 主分类号: G11B5/127
- IPC分类号: G11B5/127
摘要:
A magnetic head includes a side shield layer and an encasing layer. The side shield layer has a first end face located in the medium facing surface, a second end face opposite to the first end face, and a first groove accommodating a portion of a pole layer. The first end face includes two portions located on both sides of an end face of the pole layer that are opposite to each other in a track width direction. The encasing layer is formed of a nonmagnetic material and disposed on a side of the side shield layer opposite to a medium facing surface. The encasing layer has a front end face touching the second end face of the side shield layer, and a second groove accommodating another portion of the pole layer. The distance from the medium facing surface to an arbitrary point on the second end face of the side shield layer decreases with decreasing distance from the arbitrary point to the top surface of a substrate.
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