Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 45: Issue 3
Effect of in impurity on crystallization kinetics of (Se.7Te.3)100−xInx system
Authors:
R. MehraUniversity of Delhi South Campus Department of Electronic Sciences 110 021 New Delhi India

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A. GurinderUniversity of Delhi South Campus Department of Electronic Sciences 110 021 New Delhi India

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P. MathurUniversity of Delhi South Campus Department of Electronic Sciences 110 021 New Delhi India

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Pages:
405–415
Online Publication Date:
09 Jan 2007
Publication Date:
01 Sep 1995
Article Category:
Research Article
DOI:
https://doi.org/10.1007/bf02548774
Keywords:
crystallization kinetics; Se−Te−In system
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Abstract  

The effect of In impurity on the crystallization kinetics and the changes taking place in the structure of (Se7Te3) have been studied by DTA measurements at different heating rates (α=5 deg·min−1, 10 deg·min−1, 15 deg·min−1 and 20 deg·min−1). From the heating rate dependence of the values ofTg,Tc andTp, the glass transition activation energy (Et) and the crystallization activation energy (Ec) have been obtained for different compositions of (Se7Te3)100−xInx (0≤×≤20). The variation of viscosity as a function of temperature has been evaluated using Vogel-Tamman-Fulcher equation. The crystallization data are analysed using Kissinger's and Matusita's approach for nonisothermic crystallization. It has been found that for samples containing In=0, 10, 15, 20 at%, three dimensional nucleation is predominant whereas for samples containing In=5 at%, two dimensional nucleation is the dominant mechanism. The compositional dependence ofTg and crystallization kinetics are discussed in terms of the modification of the structure of the Se−Te system.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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