多域铁电中的柔电性

IF 1.4 4区物理与天体物理 Q3 PHYSICS, MULTIDISCIPLINARY

JETP Letters Pub Date : 2024-11-01 DOI:10.1134/S0021364024602847

A. S. Yurkov, P. V. Yudin

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引用次数: 0

摘要

研究考虑了宏观无极化多畴铁电体的挠电性。研究表明，由于单个畴的压电效应，挠电模量发生了变化。扰动理论得到了发展，其中的效应出现在三阶。对钛酸铅各向同性近似效应的估计表明，挠电模量 f1111 和 f1122 的修正与其初始值相当，仅取决于 f1212 的初始值。对 f1212 的修正很小，因此可以使用扰动理论。

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On Flexoelectricity in a Multidomain Ferroelectric

Flexoelectricity in a macroscopically unpolarized multidomain ferroelectric is considered. It has been shown that the flexoelectric moduli are modified due to the piezoelectric effect in individual domains. The perturbation theory has been developed, where the effect appears in the third order. The estimate of the effect for lead titanate in the isotropic approximation has shown that corrections to the flexoelectric moduli f₁₁₁₁ and f₁₁₂₂ are comparable with their initial values and depend only on the initial value of f₁₂₁₂. The correction to f₁₂₁₂ is small, which allows one to use the perturbation theory.

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来源期刊

JETP Letters 物理-物理：综合

CiteScore

2.40

自引率

30.80%

发文量

164

审稿时长

3-6 weeks

期刊介绍： All topics of experimental and theoretical physics including gravitation, field theory, elementary particles and nuclei, plasma, nonlinear phenomena, condensed matter, superconductivity, superfluidity, lasers, and surfaces.