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Short-range structure and thermal properties of lead tellurite glasses

Abstract: PbO-TeO2 glasses having composition: xPbO?(100 - x)TeO2 (x = 10, 15 and 20 mol%) were prepared by melt quenching and characterized by X-ray diffraction, density measurements, differential scanning calorimetry and Raman spectroscopy. Glass density increases from 5.89 to 6.22 g cm-3 with increase in PbO concentration from 10 to 20 mol%, due to the replacement of TeO2 by heavier PbO. DSC studies found that glass transition temperature (Tg) decreases from a value of 295°C to 281°C. Raman studies found that glass short-range structure consists of TeO4 and TeO3 structural units and that PbO modifies the network by the structural transformation: TeO4 to TeO3.

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Authorship: Hirdesh, 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: 10.1063/1.4980457

ISSN: 0094-243X,1551-7616

Publication Url: https://doi.org/10.1063/1.4980457

UCrea Repository Read publication

Authorship

KUMAR, HIRDESH

KAUR, AMARJOT

KHANNA, ATUL

JESUS FERNANDO GONZALEZ MARTINEZ

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