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HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 305-306A Study of the Physical Properties of...

A Study of the Physical Properties of Te₁₅(Se_100-xBi_x)₈₅ Glassy Alloys

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Abstract:

In the present communication, a study was made of the compositional variation of physical properties: average coordination number (), average number of constraints (Ncon), number of lone-pair electrons (L), mean bond energy (), cohesive energy (CE), average heat of atomization (Hs), glass transition temperature (Tg), density (ρ) and theoretical energy gap (Eg) for Te15(Se100-xBix)85 (x = 0, 1, 2, 3, 4, 5at%) glassy alloys. The mean bond energy and the cohesive energy have been calculated using the chemical bond approach (CBA). The glass transition temperature was calculated using the Tichy-Ticha approach, and has been found to increase with Bi content. The mean bond energy is found to be proportional to the glass transition temperature and the average coordination number. It has been found that the average coordination number, average number of constraints, mean bond energy and density increase, whereas the cohesive energy, average heat of atomization and theoretical energy gap decrease with increasing Bi content in Se-Te alloys.

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Defects and Diffusion in Metals XII

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Periodical:

Defect and Diffusion Forum (Volumes 305-306)

Pages:

61-69

DOI:

https://doi.org/10.4028/www.scientific.net/DDF.305-306.61

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Online since:

October 2010

Authors:

Kameshwar Kumar, Nagesh Thakur, S.C. Katyal, Pankaj Sharma

Keywords:

Chalcogenide Glasses, Cohesive Energy, Density, Glass Transition Temperature, Theoretical Energy Gap

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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