论文部分内容阅读
试样的扭转应变随外场(温度场、电场、磁场)的变化谱即扭转应变谱可以有效地反映试样对外场的动力学响应行为.研究表明,利用传统倒扭摆可以高精度测量扭变谱,证实了含铅量为32%的弛豫铁电体铌镁酸铅(PMN-32%PT)的四方-立方转变是一种爆发型马氏体相变.
The torsional strain spectrum of the specimen can reflect the dynamic response of the specimen to the external field effectively with the change spectrum of the external field (temperature field, electric field and magnetic field). The results show that the torsional strain spectrum can be measured with the traditional inverted torsion pendulum , Confirms that the tetragonal-cubic transformation of relaxation ferroelectric lead magnesium niobate (PMN-32% PT) containing 32% lead is an explosive martensitic transformation.