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.
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页数：6
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