The field dependence of magnetoelastic damping in magnetostrictive material and its application in the magnetic field sensing
磁致伸缩材料磁弹性内耗的场依赖特性及其用于磁场传感研究

The magnetoelastic damping in magnetostrictive material is investigated. It is noted that the quality factor (the inverse measure of damping) of giant magnetostrictive material Terfenol-D is strongly dependent on bias direct current (DC) magnetic field. Taking advantage of the DC field dependence of magnetoelastic damping in magnetostrictive material,a DC or quasistatic magnetic sensor is proposed. The sensor is designed as a composite piezoelectric transformer (CPT) which is fabricated by bonding magnetost...