| 基于巨磁电阻位移传感器的固体热胀系数测量 |
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| 引用本文： | 康伟芳. 基于巨磁电阻位移传感器的固体热胀系数测量[J]. 传感器与微系统, 2009, 28(6): 107-109 |
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| 作者姓名： | 康伟芳 |
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| 作者单位： | 东北电力大学,理学院,吉林,吉林,132012 |
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| 摘 要： | 介绍磁性纳米多层膜中的自旋极化输运和巨磁电阻效应，利用巨磁电阻传感器和小磁钢设计一种高灵敏度位移传感器，并精确测量金属的热膨胀系数，测量金属热膨胀系数不确定度一般优于3％．
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| 关 键 词： | 自旋极化输运 巨磁电阻 位移传感器 热膨胀系数 |
Solid measurement of thermal expansion coefficient based on GMR Sensor |
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| KANG Wei-fang. Solid measurement of thermal expansion coefficient based on GMR Sensor[J]. Transducer and Microsystem Technology, 2009, 28(6): 107-109 |
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| Authors: | KANG Wei-fang |
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| Affiliation: | KANG Wei-fang ( College of Science, Northeast Dianli University, Jilin 132012, China) |
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| Abstract: | The spin-polarized transport and giant magnetoresistance in magnetic nanomultilayers are introduced,a high-sensistivity sensor is designed by GMR devices and small magnet,and thermal expansion coefficient of metal is measured accuratdy,metal uncertainty of measuring coefficient of thermal expansion is generally less than 3 %. |
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| Keywords: | spin-polarized transport GMR displacement sensor coefficient of thermal expansion |
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