中文摘要：

Fe73.5Cu1Nb3Si13.5B9非晶合金薄带在540℃下17.8 MPa拉应力退火后具有宽平台和陡峻下降沿的巨磁阻抗特性,据此研制了一款新型磁敏开关。文中介绍了磁敏材料的GMI特性及磁敏开关的电路设计原理,对磁敏开关的磁场和温度特性进行了测试,结果表明：该磁敏开关的重复性好,迟滞误差小,温漂低。

英文摘要：

A new kind of magnetic switch was developed based on Giant Magneto-impedance effect （GMI）of Fe73.sCulNb3Si13.sB9 amorphous ribbon annealed under the stress of 17. 8MPa and at 540 °C, which has wide platform and steep decline of the GMI characteristics. This paper introduces the GMI characteristics of magnetic materials and the circuit principle of magnetic switch. In addition, the magnetic characteristic and temperature characteristic of the magnetic switch has been measured. The results showed that the sensor had good repeatability, almost no hysteresis, low temperature drift.