发明名称 |
SENSOR ELEMENT WITH TEMPERATURE COMPENSATING FUNCTION, AND MAGNETIC SENSOR AND ELECTRIC POWER MEASURING DEVICE WHICH USE SAME |
摘要 |
A magnetoresistance effect type magnetic sensor has a problem in that the increase in the surrounding temperature decreases the magnetic characteristic of a magnetic film itself and thereby decreases the sensitivity of the sensor. A sensor element includes: a magnetic film having magnetoresistance effect; a pair of electrodes for applying an electric current to the magnetic film, the pair of electrodes being opposed across the magnetic film; a longitudinal bias magnetic field addition magnet to generate a first bias magnetic field in an opposing direction of the electrodes; and a lateral bias magnetic field addition magnet to generate a second bias magnetic field in an orthogonal direction to the longitudinal bias magnetic field addition magnet, in which a temperature characteristic of the longitudinal bias magnetic field addition magnet is higher than a temperature characteristic of the lateral bias magnetic field addition magnet. |
申请公布号 |
US2016041209(A1) |
申请公布日期 |
2016.02.11 |
申请号 |
US201414781418 |
申请日期 |
2014.04.01 |
申请人 |
SIRC Co., LTD |
发明人 |
TSUJIMOTO Hiroaki |
分类号 |
G01R21/08;G01R33/09 |
主分类号 |
G01R21/08 |
代理机构 |
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代理人 |
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主权项 |
1. A sensor element comprising:
a magnetic film having magnetoresistance effect; a pair of electrodes for applying an electric current to the magnetic film, the pair of electrodes being opposed across the magnetic film; a longitudinal bias magnetic field addition magnet to generate a first bias magnetic field in an opposing direction of the electrodes; and a lateral bias magnetic field addition magnet to generate a second bias magnetic field in an orthogonal direction to the longitudinal bias magnetic field addition magnet, wherein a temperature characteristic of the longitudinal bias magnetic field addition magnet is higher than a temperature characteristic of the lateral bias magnetic field addition magnet. |
地址 |
Osaka-shi, Osaka JP |