ANOMALIES OF TEMPERATURE DEPENDENCES OF BIREFRINGENCE IN CA3GA2GE4O14 CRYSTALS

被引：0
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作者：
NOSENKO, AE
LESHCHUK, RE
KRAVCHISHIN, VV
机构：
来源：
UKRAINSKII FIZICHESKII ZHURNAL | 1990年 / 35卷 / 09期
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O4 [物理学];
学科分类号：
0702 ;
摘要：
Temperature dependences of birefringence delta-(DELTA-n) in Ca3Ga2Ge4O14 crystals (space group P 321) are investigated in the range of 80-440 K. The analysis of temperature dependences delta-(DELTA-n) = f(T) shows the existence of structural phase transitions of the first and second order. The display of these transitions depends on the statistical filling of the cation sites. A critical exponent of the second-order phase transitions is calculated.
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页码：1315 / 1317
页数：3
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