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Study of crystallization rate constant of (Se80Te20)100-xAgx chalcogenide glasses

Published online by Cambridge University Press:  08 October 2010

D. Singh ,
S. Kumar  and
R. Thangaraj
D. Singh
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev University, Amritsar, 143005Punjab, India
S. Kumar
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev University, Amritsar, 143005Punjab, India
R. Thangaraj*
Affiliation:
Semiconductors Laboratory, Department of Applied Physics, Guru Nanak Dev University, Amritsar, 143005Punjab, India
*
rthangaraj@rediffmail.com
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Abstract

The present paper reports the preparation of (Se80Te20)100-xAgx (0 ≤x≤ 4) chalcogenide glasses in bulk by using melt quenching technique. DSC runs of these samples have been taken at four different heating rates (5, 10, 15, 20 K/min). The variation in crystallization temperature Tc with Ag concentration at different heating rates has been studied. A strong co-relation between the pre-exponential factor K0 of rate constant K of crystallization and activation energy of crystallization Ec has been observed. The variation of rate constant K with composition and the dependence of Ec with Ag concentration have been studied.

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 52 , Issue 2: Focus on Numelec , November 2010 , 20303
Copyright
© EDP Sciences, 2010

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