Thermodynamic analysis of electro-optic coefficients of ferroelectrics

被引：1

作者：

Shirokov, V. B. ^{[1
]}

Timoshenko, P. E. ^{[2
]}

Kalinchuk, V. V. ^{[1
]}

机构：

[1] Russian Acad Sci, Southern Sci Ctr, Rostov Na Donu 344006, Russia

[2] Southern Fed Univ, Fac Phys, Rostov Na Donu 344090, Russia

来源：

JOURNAL OF APPLIED PHYSICS | 2023年 / 133卷 / 06期

关键词：

BATIO3; CRYSTALS;

D O I：

10.1063/5.0137409

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The electro-optic coefficients of ferroelectric materials were obtained by Landau thermodynamic theory. It is proved that if the permittivity tensor is diagonal, then some ratios of the electro-optical coefficients are equal to the ratios of its diagonal components. The dependence of electro-optic coefficients on the external electric field for single-crystal barium titanate was studied and discussed. It is shown that electro-optic coefficients are rather high for barium titanate due to a non-linear response of dielectric susceptibility to electric field strength.

引用

页数：6

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