Temperature dependence of the complete material coefficients matrix of soft and hard doped piezoelectric lead zirconate titanate ceramics
Temperature dependence of the complete material coefficients matrix of soft and hard doped piezoelectric lead zirconate titanate ceramics
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DOI：
10.1063/1.2560441
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发表时间：
2007-03
影响因子：
3.2
通讯作者：
R. G. Sabat;B. Mukherjee;W. Ren;Guomao Yang
中科院分区：
文献类型：
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作者：
R. G. Sabat;B. Mukherjee;W. Ren;Guomao Yang
我们用共振法测量了软掺杂和硬掺杂的PZTPZT陶瓷的所有独立的压电、弹性和介电材料系数以及相应的机电耦合系数，它们的组成在准同型相界附近，其温度范围在−165到195°C之间。材料系数是通过分析几种样品共振几何结构的阻抗或导纳谱的基频共振而得到的。软、硬PZT样品的压电系数D33、−D31和D15以及介电常数e11T和e33T一般都随温度升高而增大。然而，弹性柔度系数s11E、−s12E、s33E和s55E在测试的部分温度范围内表现出异常变化，表现为宽峰。此外，在所有被研究的材料中都观察到了热滞回。
We have used resonance methods to determine the variation of all the independent piezoelectric, elastic, and dielectric material coefficients, as well as the corresponding electromechanical coupling factors, of soft and hard doped piezoelectric lead zirconate titanate (PZT) ceramics with compositions near the morphotropic phase boundary, as a function of temperature ranging between −165 and 195°C. The material coefficients 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 coefficients d33, −d31, and d15, as well as the dielectric permittivity coefficients e11T and e33T, generally increased with temperature for both soft and hard PZT samples. However, the elastic compliance coefficients s11E, −s12E, s33E, and s55E exhibited abnormal variations seen as broad peaks over parts of the tested temperature range. Additionally, thermal hystereses were observed in all the studied material ...