锗酸铋玻璃的合成、结构、发光和结晶

IF 2.7 Q1 MATERIALS SCIENCE, CERAMICS
K. Serkina, I. Stepanova, A. Pynenkov, Maria Uslamina, K. Nishchev, K. Boldyrev, R. Avetisov, I. Avetissov
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引用次数: 0

摘要

锗酸铋玻璃在5-50 mol% Bi2O3的宽浓度范围内被合成,是一种很有前途的近红外宽带光纤激光器的活性介质,也是非线性光学玻璃陶瓷的初始基体。采用拉曼光谱、傅里叶红外光谱、差示扫描量热法、x射线衍射、光学和发光等方法研究了它们的结构和物理特性。发现玻璃的主要结构单元是[BiO6]和[GeO4]。氧化铋含量的增加导致密度和折射率的增加。玻璃的光谱和发光性质与铋活性中心的数量密切相关。5Bi2O3-95GeO2样品达到了最大的红外发光强度。玻璃的热处理导致几种晶相的形成,其结构和数量取决于玻璃的初始成分。主要相为非线性Bi2GeO5和闪烁Bi4Ge3O12。与以往研究铋基和氧化锗基玻璃的论文相比,我们将Bi2O3的浓度范围扩大到50 mol%,并将合成温度从1300℃降低到1100℃。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Bismuth-Germanate Glasses: Synthesis, Structure, Luminescence, and Crystallization
Bismuth-germanate glasses, which are well known as a promising active medium for broadband near-infrared spectral range fiber lasers and as an initial matrix for nonlinear optical glass ceramics, have been synthesized in a 5–50 mol% Bi2O3 wide concentration range. Their structural and physical characteristics were studied by Raman and FT-IR spectroscopy, differential scanning calorimetry, X-ray diffraction, optical, and luminescence methods. It has been found that the main structural units of glasses are [BiO6] and [GeO4]. The growth in bismuth oxide content resulted in an increase in density and refractive index. The spectral and luminescent properties of glasses strongly depended on the amount of bismuth active centers. The maximum intensity of IR luminescence has been achieved for the 5Bi2O3-95GeO2 sample. The heat treatment of glasses resulted in the formation of several crystalline phases, the structure and amount of which depended on the initial glass composition. The main phases were non-linear Bi2GeO5 and scintillating Bi4Ge3O12. Comparing with the previous papers dealing with bismuth and germanium oxide-based glasses, we enlarge the range of Bi2O3 concentration up to 50 mol% and decrease the synthesis temperature from 1300 to 1100 °C.
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来源期刊
CiteScore
3.00
自引率
7.10%
发文量
66
审稿时长
10 weeks
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