Abstract

The nonlinear polarization and ferroelectricity in the paraelectric region of Ba_0.7Sr_0.3TiO₃ ceramic samples are investigated. For this, samples are poled at a finite field and field-induced phase is analyzed through XRD, SEM, dielectric, impedance, and Piezo force microscopy high-frequency studies before and after poling. The Rayleigh-like dynamics is inspected along with the switching behavior in to samples. Our study suggests field-induced ferroelectricity in Ba_0.7Sr_0.3TiO₃ due to polar distortion.

中文翻译：

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钛酸锶钡的顺电相中的场感应铁电

摘要

研究了Ba _0.7 Sr _0.3 TiO ₃陶瓷样品顺电区的非线性极化和铁电。为此，在极化之前和之后，样品在有限的磁场中极化，并通过XRD，SEM，电介质，阻抗和压电力显微镜高频研究来分析电场感应的相位。将检查类似Rayleigh的动力学以及切换到样本的行为。我们的研究表明，由于极性畸变，Ba _0.7 Sr _0.3 TiO _3中的场感应铁电会产生。