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首页> 外文期刊>Journal of Non-Crystalline Solids: A Journal Devoted to Oxide, Halide, Chalcogenide and Metallic Glasses, Amorphous Semiconductors, Non-Crystalline Films, Glass-Ceramics and Glassy Composites >Structural characterisation of CsCl incorporation in Ga2S3-La2S3 glasses
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Structural characterisation of CsCl incorporation in Ga2S3-La2S3 glasses

机译：Ga2S3-La2S3玻璃中CsCl掺入的结构表征

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摘要

We report X-ray absorption spectroscopy study of (80-x)Ga2S3-20La(2)-S-3-xCsCl glasses, with x = 0-40. The addition of CsCl to Ga2S3-La2S3 glasses increases their thermal stability making them suitable a host-matrix for luminescent rare earth ions. The gallium-based network is composed of almost regular tetrahedra of sulfur atoms connected by corners. The average local lanthanum site is a distorted polyhedron of sulfur atoms at a distance of 2.96 +/- 0.01 Angstrom, with a coordination number close to 7. There is no alteration in the local environment of these elements in the doped glasses with respect to the undoped one detected in the X-ray absorption spectra. The chlorine and cesium sites, as observed in the X-ray absorption spectra, are similar to that in CsCl. These experimental observations are compatible with a model in which these elements are incorporated in network ionic vacancies in the form of CsCln units. (C) 2002 Elsevier Science B.V. All rights reserved. [References: 22]
机译：我们报告（80-x）Ga2S3-20La（2）-S-3-xCsCl玻璃的X射线吸收光谱研究，x = 0-40。在Ga2S3-La2S3玻璃中添加CsCl可以提高其热稳定性，使其适合用作发光稀土离子的基质。镓基网络由几乎规则的四角硫原子通过角连接。平均局部镧位点是在2.96 +/- 0.01埃的距离处变形的硫原子多面体，配位数接近7。掺杂玻璃中这些元素的局部环境相对于表面无变化。未掺杂在X射线吸收光谱中检测到的一种。在X射线吸收光谱中观察到的氯和铯位置与CsCl中的相似。这些实验观察结果与其中这些元素以CsCln单元形式并入网络离子空位的模型兼容。 （C）2002 Elsevier Science B.V.保留所有权利。 [参考：22]

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