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Short-range structure and thermal properties of barium tellurite glasses

Abstract: 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 (Tg) increases significantly from a value of 318°C to 327°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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Authorship: Kaur A., Khanna A., Gonzàlez F.,

Congress: DAE Solid State Physics Symposium (61º : 2016 : Bhubaneswar, Odisha, India)

Publisher: American Institute of Physics

Publication date: 01/05/2017

No. of pages: 3

Publication type: Conference object

DOI: 10.1063/1.4980450

ISSN: 0094-243X,1551-7616

Publication Url: https://doi.org/10.1063/1.4980450

UCrea Repository Read publication

Authorship

KAUR, AMARJOT

KHANNA, ATUL

JESUS FERNANDO GONZALEZ MARTINEZ

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