Abstract
基于巨磁阻抗效应(GMI)的磁强计是近年来磁强计研究领域的热点. 相比其他类型磁强计, GMI磁强计具有微型化、高灵敏度、快速响应、高温度 稳定性和低功耗的优点. 本文以铁基纳米晶带材为敏感材料, 设计并实现了GMI 磁强计传感器与后续信号处理电路, 组成一台GMI磁强计. 实验结果表明, 该磁 强计在-25000~25000nT量程内灵敏度为0.176mV·nT<sup>-1</sup>, 满足实际弱磁场测量要求, 并且具有体积小及功耗低的特点, 有望应用于空间 探测等磁测量领域.
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