2ND HARMONIC LIGHT-SCATTERING IN PARAELECTRIC PEROVSKITES

被引：59

作者：

PRUSSEITELFFROTH, W

SCHWABL, F

机构：

[1] Physik-Department der Technischen Universität München, Institut für Theoretische Physik, Garching, D-8046, James-Franck-Strasse

来源：

APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING | 1990年 / 51卷 / 05期

关键词：

42.65.K; 61.70.R; 77.80.B; 78.30;

D O I：

10.1007/BF00348373

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Although one expects second harmonic generation to be absent in phases with inversion symmetry, second harmonic signals are observed in the paraelectric phase of several perovskite. We explain this frequency-doubled intensity and its temperature dependence by second harmonic scattering (SHS) due to static point defects inducing a local polarisation and dynamic fluctuations. The intensity and polarisation properties are calculated for both contributions. © 1990 Springer-Verlag.

引用

页码：361 / 368

页数：8

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