铁镓合金阻抗频率特性测量与分析

通过测量铁镓合金在不同磁场下的阻抗频率特性,确定铁镓合金的柔顺系数S33和磁机械耦合系数K33,为铁镓合金在致动器和换能器等系统中的应用提供设计参考。分别测量棒状样品和片状样品在不同磁场下的阻抗频率特性,确定共振频率和反共振频率,计算S33和K33,并将片状样品与棒状样品特性参数进行对比分析。结果表明,片状和棒状样品的S33和K33随磁场的增加先增大后减小,在同一磁场下片状样品的柔顺系数小于棒状样品,片状样品的磁机械耦合系数大于棒状样品。随磁场的增加先增大后减小，在同一磁场下片状样品的柔顺系数小于棒状样品，片状样品的磁机械耦合系数大于棒状样品。

Measurement and Analysis of Impedance Frequency Characteristics of Fe-Ga Alloy

The softening coefficient (S33) and the magnetic mechanical coupling coefficient (K33) of Fe-Ga alloy were determined by measuring the impedance frequency characteristics of Fe-Ga under different magnetic fields, which provides a design reference for the application of Fe-Ga alloys in systems such as actuators and transducers.The resonant frequency and the anti-resonant frequency of the rod-shaped sample and the flake sample under different magnetic fields were measured by constructing the measuring device.The calculation of S33 and K33 were carried out and the characteristic parameters of the flake sample and the rod sample were compared and analyzed.The results show that S33 and K33 of rod sample and the flake sample increase first and then decrease with the increase of the magnetic field.The softening coefficient of the flake sample is smaller than that of the rod sample, and the magnetic mechanical coupling coefficient is larger than that of the rod sample.