Point defects and dichroism in langasite and langatate crystals

被引：0
作者：
N. S. Kozlova
O. A. Busanov
E. V. Zabelina
A. P. Kozlova
M. B. Bykova
机构：
[1] National University of Science and Technology “MISiS”,
[2] ОАО Fomos-Materials,undefined
来源：
Crystallography Reports | 2016年 / 61卷
关键词：
Crystallography Report; Color Center; Gallium Oxide; Crucible Material; Lithium Tantalate;
D O I：
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中图分类号：
学科分类号：
摘要：
The hypotheses about the nature of color centers in langasite family crystals that are discussed in the literature are analyzed. Optical transmission spectra in the wavelength range of 200–800 nm are recorded for langasite and langatate crystals grown in atmospheres of argon and argon mixed with oxygen in different concentrations, both in the initial state and after isothermal annealings at 1000°C in nitrogen, in air, or in vacuum. Dichroism is observed in langasite and langatate crystals, and spectral dependences of the degrees of dichroism are plotted.
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页码：275 / 284
页数：9
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