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Title: A Study of the Physical Properties of Te15(Se100-xBix)85 Glassy Alloys
Authors: Kameshwar Kumar
Thakur, Nagesh
Katyal, S.C.
Sharma, Pankaj
Keywords: Chalcogenide Glasses
Cohesive Energy
Glass Transition Temperature
Issue Date: 2010
Publisher: Jaypee University of Information Technology, Solan, H.P.
Abstract: In the present communication, a study was made of the compositional variation of physical properties: average coordination number (<r>), average number of constraints (Ncon), number of lone-pair electrons (L), mean bond energy (<E>), 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.
Description: Defect and Diffusion Forum Vols 305-306 (2010) pp 61-69 Online: 2010-10-21 © (2010) Trans Tech Publications, Switzerland doi:10.4028/
Appears in Collections:Journal Articles

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