一、引言在铁磁性和铁氧体晶体中发生磁化过程时,磁化矢量的旋转一般伴随着晶体尺寸的改变,这种现象称为磁致伸缩。通常利用 x 射线衍射、电阻应变仪和电容传感器测量磁致伸缩应变。在很低温度下和强磁场中的测量通常受到场地的限制。笨重的设备不便应用,应变片 I. INTRODUCTION In the magnetization process occurring in ferromagnetism and ferrite crystals, the rotation of the magnetization vector is generally accompanied by a change in the crystal size, a phenomenon known as magnetostriction. Magnetostrictive strains are typically measured using x-ray diffraction, strain gauges and capacitance sensors. Measurements at very low temperatures and in strong magnetic fields are often limited by the site. Clumsy device inconvenience application, strain gauge