Thermal expansion of some Ge-Se-Te glasses

Mahadevan, Sudha and Giridhar, A and Singh, AK (1987) Thermal expansion of some Ge-Se-Te glasses. Technical Report. National Aeronautical Laboratory, Bangalore, India.

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Abstract

Results of measurement of thermal expansion coefficient (From 50 degree C to the softening temperature) are reported for eight glass compositions of the Ge-Se-Te system. For the (Gese2)100-2xsexTex glasses, an increase of Tg and of DxB5; is seen with decreasing SeTe content. For (Gese2)22.33se30-xTex glasses, xB5;, Tg and DxB5; are invariant with composition. The results obtained presently, when examined along with those obtained for other chalcogenide glasses, indicate that chalcogenide glasses are not necessarily in a state of isofree volume during glass transition. Values ranging from 0.024 to 0.167 are obtained13; for the free volume of some chalcogenide glasses.

Item Type: Monograph (Technical Report)
Uncontrolled Keywords: Ge-Se-Te glasses;Thermal expansion;Free volume during transition
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Depositing User: Users 64 not found.
Date Deposited: 22 Jul 2006
Last Modified: 24 May 2010 04:16
URI: http://nal-ir.nal.res.in/id/eprint/2149

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