Optical studies of order parameter fluctuations in solid solutions based on lead germanate crystals

被引：14
|
作者：
Kushnir, O. S. [1 ]
Shopa, R. Y. [2 ]
Vlokh, R. O. [3 ]
机构：
[1] Lviv Natl Univ, Dept Elect, UA-79017 Lvov, Ukraine
[2] Lviv Natl Univ, Coll Nat Sci, UA-79017 Lvov, Ukraine
[3] Inst Phys Opt, UA-79005 Lvov, Ukraine
来源：
UKRAINIAN JOURNAL OF PHYSICAL OPTICS | 2008年 / 9卷 / 03期
关键词：
lead germanate crystals; optical activity; ferroelectric phase transition; order parameter; fluctuations;
D O I：
10.3116/16091833/9/3/169/2008
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The approach for interpreting fluctuations seen in optical activity is suggested based on the first fluctuation correction to the Landau theory. Quantitative analyses of the fluctuation effects for Si-, Ba- and Bi-containing crystals of lead germanate family show applicability of the model. Critical indices governing temperature behaviour of the order parameter of ferroelectric phase transition are found for the crystals under study.
引用
收藏
页码：169 / 181
页数：13
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