Optical characterization and crystal structure of the novel bronze type CaxBa1-xNb2O6 (x=0.28;: CBN-28)

被引：53

作者：

Esser, M ^{[1
]}

Burianek, M ^{[1
]}

Held, P ^{[1
]}

Stade, J ^{[1
]}

Bulut, S ^{[1
]}

Wickleder, C ^{[1
]}

Mühlberg, M ^{[1
]}

机构：

[1] Univ Cologne, Inst Kristallog, D-50674 Cologne, Germany

来源：

CRYSTAL RESEARCH AND TECHNOLOGY | 2003年 / 38卷 / 06期

关键词：

ferroelectric materials; tetragonal tungsten bronzes; thermal analysis; optical properties; X-ray structure analysis;

D O I：

10.1002/crat.200310057

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Calcium barium niobate (CBN), also like strontium barium niobate (SBN), belongs to the materials family of partially filled tetragonal tungsten bronzes, which show relaxor-type ferroelectric phase transitions and large electro-optic effects. For the first time, it was possible to grow large single crystals of Ca0.25Ba0.75Nb2O6 (CBN-25) and CBN-28 by using different growing techniques. The successful single crystal growth allowed to investigate several physical properties of the novel phase. Herein, we report on measurements of differential thermal analysis (DTA), wavelength dispersion of the refractive indices, temperature dependence of the birefringence and light absorption. Additionally, results of the single crystal X-ray structure analysis are presented.

引用

页码：457 / 464

页数：8

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