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N Mehta
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Volume 28 Issue 6 October 2005 pp 579-583 Ceramics and Glasses
Study of electrical properties of glassy Se100–𝑥Te𝑥 alloys
N Mehta A Dwivedi R Arora S Kumar A Kumar
Temperature and frequency dependence of a.c. conductivity have been studied in glassy Se100–𝑥Te𝑥 (𝑥 = 10, 20 and 30) over different range of temperatures and frequencies. An agreement between experimental and theoretical results suggests that the a.c. conductivity behaviour of selenium–tellurium system (Se100–𝑥Te𝑥) can be successfully explained by correlated barrier hopping (CBH) model. The density of defect states has been determined using this model for all the glassy alloys.
The results show that bipolaron hopping dominates over single-polaron hopping in this glassy system. This is explained in terms of lower values of the maximum barrier height for single-polaron hopping. The values of density of charged defect states increase with increase in Te concentration. This is in agreement with our previous results obtained from SCLC measurements.
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Volume 34 Issue 7 December 2011 pp 1459-1463
Calorimetric studies of non-isothermal crystallization in amorphous Cu𝑥Ti100–𝑥 alloys
The present paper reports the composition dependence of pre-exponential factor and activation energy of non-isothermal crystallization in amorphous alloys of Cu𝑥Ti100–𝑥 system using differential scanning calorimeter (DSC) technique. The applicability of Meyer–Neldel relation between the pre-exponential factor and activation energy of non-isothermal crystallization for amorphous alloys of Cu–Ti system was verified.
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Bulletin of Materials Science
Volume 46, 2023
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Dr Shanti Swarup Bhatnagar for Science and Technology
Posted on October 12, 2020Prof. Subi Jacob George — Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bengaluru
Chemical Sciences 2020Prof. Surajit Dhara — School of Physics, University of Hyderabad, Hyderabad
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