发明名称 |
Spin torque oscillator sensor employing antiparallel coupled oscilation layers |
摘要 |
A spin torque magnetoresistive sensor having a very small gap thickness. The sensor operates by measuring the change in frequency of a spin torque induced magnetic oscillation in magnetic layers of the sensor to detect the presence of a magnetic field. The sensor includes a pair of free magnetic layers that are antiparallel coupled by a thin non-magnetic coupling layer there-between. The sensor does not include a pinned layer structure nor an associated AFM pinning layer, which allows the sensor to be constructed much thinner than prior art sensors. |
申请公布号 |
US8164861(B2) |
申请公布日期 |
2012.04.24 |
申请号 |
US20090636108 |
申请日期 |
2009.12.11 |
申请人 |
BRAGANCA PATRICK M.;GURNEY BRUCE A.;HITACHI GLOBAL STORAGE TECHNOLOGIES NETHERLANDS B.V. |
发明人 |
BRAGANCA PATRICK M.;GURNEY BRUCE A. |
分类号 |
G11B5/39 |
主分类号 |
G11B5/39 |
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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