发明申请
- 专利标题： HIGHER STABILITY READ HEAD UTILIZING A PARTIAL MILLING PROCESS
- 专利标题（中）： 高稳定性阅读头部利用部分铣削过程
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申请号： US14226673申请日： 2014-03-26
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公开(公告)号： US20150279392A1公开(公告)日： 2015-10-01
- 发明人: Masashi Hattori , Norihiro Okawa , Kouichi Nishioka , Kouji Okazaki
- 申请人： HGST Netherlands B.V.
- 申请人地址： NL Amsterdam
- 专利权人： HGST Netherlands B.V.
- 当前专利权人： HGST Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 主分类号： G11B5/39
- IPC分类号： G11B5/39 ; G11B5/127
摘要：
In one embodiment, a method for forming a magnetoresistive read head includes forming a fixed layer having a first ferromagnetic material that has a fixed direction of magnetization above a lower shield layer, forming a free layer having a second ferromagnetic material positioned above the fixed layer, the free layer having a non-fixed direction of magnetization, forming a first mask above the free layer, the first mask having a predetermined width based on a track width of a magnetic medium, etching the free layer down to the fixed layer using the first mask as a guide, wherein substantially none of the fixed layer is etched, and wherein the fixed layer extends beyond both sides of the free layer in a cross-track direction, and forming magnetic domain control films on both sides of the free layer in the cross-track direction, the magnetic domain control films including a soft magnetic material.
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