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Field induced metastable ferroelectric phase in Pb0.97La0.03(Zr0.90Ti0.10)0.9925O3 ceramics
Journal of the European Ceramic Society ( IF 5.8 ) Pub Date : 2017-11-06 , DOI: 10.1016/j.jeurceramsoc.2017.11.009
I.V. Ciuchi , C.C. Chung , C.M. Fancher , C. Capiani , J.L. Jones , L. Mitoseriu , C. Galassi

Pb0.97La0.03(Zr0.9Ti0.1)0.9925O3 (PLZT 3/90/10) ceramics prepared by solid-state reaction with the compositions near the antiferroelectric/ferroelectric (FE/AFE) phase boundary were studied. From the polarization–electric field P(E) dependence and ex situ X-ray study, an irreversible electric field induced AFE-to-FE phase transition is verified at room temperature. Dielectric and in situ temperature dependent X-ray analysis evidence that the phase transition sequence in PLZT 3/90/10-based ceramics can be readily altered by poling. A first order antiferroelectric-paraelectric (AFE-to-PE) transition occurred at ∼190 °C in virgin sample and at ∼180 °C in poled sample. In addition, a FE-to-AFE transition occurs in the poled ceramic at much lower temperatures (∼120 °C) with respect to the Curie range (∼190 °C). The temperature-induced FE-to-AFE transition is diffuse and takes place in a broad temperature range of 72–135 °C. The recovery of AFE is accompanied by an enhancement in the piezoelectric properties.



中文翻译:

Pb 0.97 La 0.03(Zr 0.90 Ti 0.100.9925 O 3陶瓷中的场致亚稳态铁电相

0.97的La 0.03(锆0.9的Ti 0.10.9925 Ô 3(PLZT 3/90/10)通过与反铁电/铁电(FE / AFE)相边界附近的组合物的固态反应制备的陶瓷进行了研究。从极化电场对P(E)的依赖性以及非原位X射线研究,在室温下验证了不可逆电场引起的AFE到FE相变。电介质和原位与温度相关的X射线分析表明,通过极化可以轻松改变基于PLZT 3/90/10的陶瓷中的相变顺序。一阶反铁电-顺电(AFE到PE)转变发生在原始样品的约190°C和极化样品的约180°C。此外,在极性陶瓷中,相对于居里温度范围(〜190°C),在低得多的温度(〜120°C)下会发生FE到AFE的转变。温度引起的FE到AFE的过渡是分散的,发生在72–135°C的较宽温度范围内。AFE的恢复伴随着压电性能的增强。

更新日期:2017-11-06
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