Electro-optic effect in SrTiO3 and Sr1–xCaxTiO3 (x = 0.014)

被引：0
作者：
P. A. Markovin
M. E. Guzhva
机构：
[1] Russian Academy of Sciences,Ioffe Physical
[2] Peter the Great St. Petersburg Polytechnic University,Technical Institute
[3] St. Petersburg National Research University of Information Technologies,undefined
[4] Mechanics and Optics,undefined
来源：
Physics of the Solid State | 2016年 / 58卷
关键词：
Space Charge; Induce Polarization; Paraelectric Phase; Neon Laser; Photoexcited Charge Carrier;
D O I：
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中图分类号：
学科分类号：
摘要：
The results of the investigation of the quadratic electro-optic effect in Sr1–xCaxTiO3 with x = 0.014 (SCT) and in nominally pure SrTiO3 (STO) at room temperature in applied direct-current (dc) and alternating-current (ac) electric fields have been presented. It has been shown that the quadratic (in polarization) electro-optic coefficients of STO and SCT crystals coincide within the accuracy of the determination (±5%). It has been found that, in nominally pure STO measured in a dc electric field, there is a relaxation of the electro-optic effect with a relaxation time τ ≈ 30 s due to the formation of a space charge in the sample. No similar effect in SCT has been observed. A possible mechanism for the formation of a space charge in STO and SCT has been discussed.
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页码：140 / 143
页数：3
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