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首页> 外文会议>Conference on Active Materials: Behavior and Mechanics >Temperature dependence of the dielectric, elastic and piezoelectric material constants of lead zirconate titanate (PZT) ceramics
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Temperature dependence of the dielectric, elastic and piezoelectric material constants of lead zirconate titanate (PZT) ceramics

机译：铅锆钛酸铅（PZT）陶瓷介电，弹性和压电材料常数的温度依赖性

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摘要

Resonance methods were used to determine the variation of several piezoelectric, elastic and dielectric constants, as well as the corresponding electromechanical coupling factors of soft and hard doped Pb(Zr_xTi_(1-x))O_3 (PZT) ceramics, with compositions near the morphotropic phase boundary (MPB), as a function of temperature ranging from - 165°C to 195 °C. The material constants were obtained by analyzing the fundamental resonance of the impedance or admittance spectra as a function of frequency for several sample resonance geometries. The piezoelectric constants d_(33) and - d_(31), as well as the dielectric constants ε~T_(33), generally increased with temperature for both soft and hard PZT samples. However, the elastic constants s~E_(11) and -s~E_(12) exhibited abnormal variations seen as broad peaks over parts of the tested temperature range. Furthermore, thermal hystereses were observed in all the studied material constants during the heating and cooling cycles. Finally, it was noted that, overall, the material constants of soft PZT varied significantly more than those of hard PZT under changing temperature conditions.
机译：使用共振方法来确定几种压电，弹性和介电常数的变化，以及软和硬掺杂Pb（Zr_xti_（Zr_Xti_（1-x））O_3（PZT）陶瓷的相应机电偶联因子，在Morphotopic附近的组合物相边界（MPB），作为温度范围为-165°C至195°C的函数。通过分析阻抗或导纳光谱的基本共振作为几个样本共振几何形状的函数来获得材料常数。压电常数D_（33）和-D_（31）以及介电常数ε〜T_（33），通常随着软和硬质PZT样品的温度而增加。然而，弹性常数S〜E_（11）和-S〜e_（12）在测试温度范围内显示出视为宽峰的异常变化。此外，在加热和冷却循环期间，在所有研究的材料常数中观察到热迟滞。最后，注意到，总体而言，软PZT的材料常数在改变温度条件下的硬质PZT的材料常数显着变化。

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