发明名称 |
Method to achieve both narrow track width and effective longitudinal stabilization in a CPP GMR read head |
摘要 |
Biasing schemes used for CIP GMR devices were previously thought to be impractical for CPP devices due to current shunting by the abutted hard magnets. In the present invention the CPP stripe is a narrow conductor directly above the free layer. The resistivity of the latter is made to be relatively high so the sensing current diverges very little as it passes through it. This makes it possible to use abutted hard magnets for longitudinal bias with virtually no loss of sensing current due to shunting by the magnets.
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申请公布号 |
US2007268631(A1) |
申请公布日期 |
2007.11.22 |
申请号 |
US20070880956 |
申请日期 |
2007.07.24 |
申请人 |
HEADWAY TECHNOLOGIES, INC. |
发明人 |
GUO YIMIN;ZHU LI-YAN |
分类号 |
G11B5/127;G11B5/33;G11B5/39 |
主分类号 |
G11B5/127 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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