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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 >IR absorption spectra of lithium and silver vanadium-tellurite based glasses
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IR absorption spectra of lithium and silver vanadium-tellurite based glasses

机译：锂和银钒碲石基玻璃的红外吸收光谱

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The aim of the present paper is to give structural information in order to set a correlation between the electrical conductivity behavior and structures of lithium and silver vanadium-tellurite based glasses. We report our structural studies and compare the effect of the nature of the metallic cation on glasses of the form XM2O center dot(1 - X)V2O5 center dot 2TeO(2) (where 0 <= X < 1 and M = Li or Ag). Fourier transform infra-red (FTIR) spectra were recorded for all compositions and complementary differential scanning calorimetry (DSC) measurements and X-ray diffraction (XRD) measurements were also carried out. This paper should be considered as complementary to a previous article reporting the conductive behavior of theses glasses. In the latter we reported the obtained results on electrical conductivity studies. The results confirm the existence of a transition from a typically electronic (polaronic) conductive regimen when the molar fraction (X) of M2O is equal to 0, to an ionic conductive regimen when X tends to 1. The evidence for the independent migration path for both electrons and ions was put into evidence by studying the electrical conductivity behavior in a complementary system of the form X XM2O(1 - X)[0.5V(2)O(5)-0.5MoO(3)]center dot 2TeO(2). In this system vanadium was partially replaced by molybdenum which acts as a 'diluting' agent of the active centers involved in the electronic transport. (c) 2007 Elsevier B.V. All rights reserved.
机译：本文的目的是提供结构信息，以便在电导行为与锂和银钒-碲-锂基玻璃的结构之间建立关联。我们报告了我们的结构研究并比较了金属阳离子的性质对形式为XM2O中心点（1-X）V2O5中心点2TeO（2）的玻璃的影响（其中0 <= X <1且M = Li或Ag ）。记录所有成分的傅立叶变换红外（FTIR）光谱，还进行互补差示扫描量热（DSC）测量和X射线衍射（XRD）测量。本文应被视为对先前报道这些玻璃导电性能的文章的补充。在后者中，我们报道了在电导率研究中获得的结果。结果证实，当M2O的摩尔分数（X）等于0时，存在从典型的电子（极化）导电方案过渡到X趋于1时的离子导电方案的过渡。通过研究X XM2O（1- X）[0.5V（2）O（5）-0.5MoO（3）]中心点2TeO（2）形式的互补系统中的电导率行为，电子和离子都得到了证明。 ）。在该系统中，钒被钼部分替代，而钼作为电子传输中活性中心的“稀释剂”。 （c）2007 Elsevier B.V.保留所有权利。

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