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Some Properties of the Glass Transition in the Amorphous Sb-As-S-Se-I System

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Abstract:

Transformations of glasses from the multicomponent pseudobinary system (As2Se3)100−x(SbSI)x were analyzed from the aspect of determining the glass transition temperature Tg, activation energy of the process Et, and characteristic changes of the specific heat. The established dependence of Tg on glass composition and heating rate served as the basis for determining the activation energy of glass transition process Et. An abrupt increase in the specific heat cp at the glass transition temperature was analyzed with the aim of classifying the materials according to the criterion of the so-called 'fragility'. It was found that the investigated glasses, i.e. their melts, belong to the group of thermodynamically 'strong' melts.

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Periodical:

Materials Science Forum (Volume 555)

Pages:

165-170

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.555.165

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Online since:

September 2007

Authors:

F. Skuban, S.R. Lukić, D.M. Petrović, Mirjana Šiljegović

Keywords:

Activation Energy, Chalcogenide Glass, Fragility, Glass Transition, Specific Heat

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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