发明授权
- 专利标题： Multilayer magnetic structure wherein the magnitude of the structure magnetoresistance is a function of nonmagnetic layer thickness
- 专利标题（中）： 多层磁结构，其中结构磁阻的大小是非磁性层厚度的函数
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申请号： US60462申请日： 1993-05-06
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公开(公告)号： US5341118A公开(公告)日： 1994-08-23
- 发明人: Stuart S. P. Parkin , Kevin P. Roche
- 申请人： Stuart S. P. Parkin , Kevin P. Roche
- 申请人地址： NY Armonk
- 专利权人： International Business Machines Corporation
- 当前专利权人： International Business Machines Corporation
- 当前专利权人地址： NY Armonk
- 主分类号： G01R33/09
- IPC分类号： G01R33/09 ; G11B5/39 ; H01F10/32 ; H01L43/10 ; H01L43/00
摘要：
A multilayer magnetoresistive (MR) sensor formed on a substrate includes alternating layers of a ferromagnetic material and a non-magnetic metallic material. The ferromagnetic material and the non-magnetic material form bilayers which exhibit the property that the magnetoresistance of the multilayered structure oscillates as a function of thickness of the non-magnetic material. A current flow is produced through the MR sensor, and the variations in the resistivity of the MR sensor are sensed as a function of the magnetic field being sensed.
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