发明名称 |
Magnetic sensor and method for manufacturing the same |
摘要 |
In order to obtain a magneto-impedance type magnetic sensor having a soft magnetic film facing to a conductive nonmagnetic film, and available a large impedance change with a carrier signal at a relatively low frequency, the magnetic sensor comprises a meander type conductive nonmagnetic thin film of zigzag shape formed with at least one pair of electrode terminals at both ends and a soft magnetic film which is strip-shaped so as to face thereto at a plurality of regions and has an easy axis of magnetization in a width direction of the strip shape, a high frequency carrier signal is applied to the above-mentioned electrode terminals and further a direct current bias magnetic field is applied. By performing AM detection of an AM modulation signal output from the above-mentioned electrode terminals, an impedance change of the conductive nonmagnetic film which is changed by external magnetic field is detected as a change of the high frequency carrier signal, thereby the external magnetic field can be detected.
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申请公布号 |
US2004150397(A1) |
申请公布日期 |
2004.08.05 |
申请号 |
US20030478136 |
申请日期 |
2003.11.20 |
申请人 |
KUROE AKIO;MURAMATSU SAYURI;MURATA AKIO;TAKAHASHI KEN;TOSAKI YOSHIHIRO |
发明人 |
KUROE AKIO;MURAMATSU SAYURI;MURATA AKIO;TAKAHASHI KEN;TOSAKI YOSHIHIRO |
分类号 |
G01R33/02;G11B5/33;G11B5/335;(IPC1-7):G01R33/02;H01L43/00 |
主分类号 |
G01R33/02 |
代理机构 |
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