ABSTRACT In this work, (1−x)Pb(Mg1/3Nb2/3)O3−xPbTiO3 (PMN−PT) where x = 0.1−0.3 relaxor ferroelectric ceramics were prepared. PMN−PT ceramics were subjected to measurement of dielectric constant by LCR meter by cooling method from 200 to 25°C and investigation subswitching electric field induced strain behaviour was carried out twice, before and after 500°C annealing, by modified Michelson interferometric technique at various temperatures (30−70°C). The result showed higher dielectric properties and broad peak at phase transition temperature Tm of ferroelectric to paraelectric, like the nonlinear change of integrated P-E areas and s-E areas around 40 and 90°C for x = 0.1 and 0.2, but the induced strain and integrated s-E area are very sensitive to the annealing effect to observed ferroelectric phase change from normal ferroelectric to relaxor phase around 40 and 60°C for x = 0.2 and 0.3.

中文翻译：

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温度对 PMN-PT 陶瓷诱导应变行为的依赖性

摘要 在这项工作中，制备了 (1-x)Pb(Mg1/3Nb2/3)O3-xPbTiO3 (PMN-PT)，其中 x = 0.1-0.3 弛豫铁电陶瓷。PMN-PT 陶瓷通过 LCR 计通过从 200 到 25°C 的冷却方法进行介电常数测量，并在 500°C 退火之前和之后，通过改进的迈克尔逊干涉技术在各种温度（30-70°C）。结果表明，铁电体到顺电体的相变温度 Tm 具有更高的介电性能和宽峰，如 x = 0.1 和 0.2 时集成 PE 区域和 sE 区域在 40 和 90°C 附近的非线性变化，