Short-Range Structure and Thermal Properties of Barium Tellurite Glasses

被引：0
|
作者：
Kaur, Amarjot [1 ]
Khanna, Atul [1 ]
Gonzalez, Fernando [2 ]
机构：
[1] Guru Nanak Dev Univ, Dept Phys, Sensors & Glass Phys Lab, Amritsar 143005, Punjab, India
[2] Univ Cantabria, Dept Chem & Proc & Recourse Engn, E-39005 Santander, Spain
来源：
61ST DAE-SOLID STATE PHYSICS SYMPOSIUM | 2017年 / 1832卷
关键词：
Tellurite glasses; Thermal Properties; Raman studies;
D O I：
10.1063/1.4980450
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
BaO-TeO2 glasses containing 10 to 20 BaO mol% were prepared and characterized by X-ray diffraction, density measurements, differential scanning calorimetry and Raman spectroscopy. Glass density decreases with increase in BaO concentration from 10 to 20 mol%, due to replacement of heavier TeO2 by lighter BaO, however glass transition temperature (T-g) increases significantly from a value of 318 degrees C to 327 degrees C due to increase in average single bond enthalpy of the tellurite network. Raman studies found that glass short-range structure consists of TeO4 and TeO3 structural units and BaO modifies the network by producing the structural transformation: TeO4 -> TeO3.
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页数：3
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