发明授权
- 专利标题： Thin film magnetic head which suppresses inflow of magnetic generated by bias-applying layers into a free layer from a layering direction
- 专利标题（中）： 薄膜磁头，其抑制由偏置施加层从层叠方向向自由层产生的磁的流入
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申请号： US11798744申请日： 2007-05-16
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公开(公告)号： US07817381B2公开(公告)日： 2010-10-19
- 发明人: Naoki Ohta , Kosuke Tanaka , Kazuki Sato
- 申请人： Naoki Ohta , Kosuke Tanaka , Kazuki Sato
- 申请人地址： JP Tokyo
- 专利权人： TDK Corporation
- 当前专利权人： TDK Corporation
- 当前专利权人地址： JP Tokyo
- 代理机构： Oliff & Berridge, PLC
- 主分类号： G11B5/33
- IPC分类号： G11B5/33
摘要：
A thin film magnetic head comprises a lower magnetic shield layer and an upper magnetic shield layer which are mutually opposed in the layering direction, a magnetoresistance effect element having a free layer, and a bias-applying layer which applies a bias magnetic field to the magnetoresistance effect element. The free layer is positioned between the lower magnetic shield layer and the upper magnetic shield layer, and is positioned on the side of the media-opposed surface. The bias-applying layer has a first portion, a second portion, and a third portion. The first portion and the second portion are positioned at a distance in the track width direction so as to enclose the magnetoresistance effect element therebetween. The third portion is positioned either between the magnetoresistance effect element and the lower magnetic shield layer or between the magnetoresistance effect element and the upper magnetic shield layer, and connects the first portion and the second portion.
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