发明授权
US08031442B2 Magnetic head having CPP sensor with improved biasing for free magnetic layer
有权
具有CPP传感器的磁头，具有改进的自由磁性层偏置
- 专利标题： Magnetic head having CPP sensor with improved biasing for free magnetic layer
- 专利标题（中）： 具有CPP传感器的磁头，具有改进的自由磁性层偏置
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申请号： US11888733申请日： 2007-08-01
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公开(公告)号： US08031442B2公开(公告)日： 2011-10-04
- 发明人: Mustafa Michael Pinarbasi
- 申请人： Mustafa Michael Pinarbasi
- 申请人地址： NL Amsterdam
- 专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人： Hitachi Global Storage Technologies Netherlands B.V.
- 当前专利权人地址： NL Amsterdam
- 代理机构： Zilka-Kotab, PC
- 主分类号： G11B5/33
- IPC分类号： G11B5/33 ; G11B5/127
摘要：
A magnetic head for a hard disk drive having a CPP read head sensor that includes a layered sensor stack including a free magnetic layer and hard bias elements that are disposed on the sides of the free magnetic layer to provide a biasing magnetization for the free magnetic layer. To increase the coercivity of the hard bias elements, and thereby improve the biasing of the magnetization of the free magnetic layer, the ratio (t/H) of the thickness t to the height H of the hard bias elements is fabricated to be within the range of from approximately 1 to approximately 1/15.
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