发明授权
- 专利标题: Method of manufacturing magnetic head for perpendicular magnetic recording
- 专利标题(中): 用于垂直磁记录的磁头制造方法
-
申请号: US12379044申请日: 2009-02-11
-
公开(公告)号: US07870660B2公开(公告)日: 2011-01-18
- 发明人: Yoshitaka Sasaki , Hiroyuki Itoh , Hironori Araki , Takehiro Horinaka , Shigeki Tanemura
- 申请人: Yoshitaka Sasaki , Hiroyuki Itoh , Hironori Araki , Takehiro Horinaka , Shigeki Tanemura
- 申请人地址: US CA Milpitas
- 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 Milpitas
- 代理机构: Oliff & Berridge, PLC
- 主分类号: G11B5/127
- IPC分类号: G11B5/127 ; H04R31/00
摘要:
A magnetic head includes: an encasing layer made of a nonmagnetic material and having a groove that opens in the top surface; a nonmagnetic metal layer made of a nonmagnetic metal material, disposed on the top surface of the encasing layer, and having a penetrating opening that is contiguous to the groove; and a pole layer made of a magnetic metal material and encased in the groove of the encasing layer and in the opening of the nonmagnetic metal layer. The pole layer has an end face located in a medium facing surface, the end face having a first portion and a second portion that is located farther from a substrate than the first portion and connected to the first portion. The first portion has a width that decreases as the distance from the substrate decreases. The second portion has a uniform width that defines the track width. In the medium facing surface, the nonmagnetic metal layer exists on both sides of the second portion, the sides being opposed to each other in the direction of track width.
公开/授权文献
信息查询
IPC分类: