STUDIES ON SOME Ge-Se-Te GLASSES.

Mahadevan, Sudha and Giridhar, A and Singh, AK (1988) STUDIES ON SOME Ge-Se-Te GLASSES. Journal of Non-Crystalline Solids, 103 (2amp;3). pp. 179-194.

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Abstract

The glass transition temperature (Tg), electrical conductivity ( sigma ) and density (d) have been measured for eight compositions of the Ge-Se-Te system. In(GeSe//2)//1//0//0// minus //2//xSe//xTe//x glasses, an increase of a sigma and density is seen with increasing Te content. The T//g of these glasses reduces with increasing Te content due to a continuous reduction of E//g and connectedness. In the variation of T//g and d with composition, a large change in slope is seem in the vicinity of the composition with the average coordination number LT AN BR m RT AN BR of 2. 4. This is consistent with the Phillips-Thorpe model which indicates mechanical critical behavior for composition with LT AN BR m RT AN BR equal to 2. 4. 54 Refs.

Item Type: Journal Article
Uncontrolled Keywords: CRYSTALLIZATION; GERMANIUM COMPOUNDS; X-RAYS - Diffraction; BAND GAP; GLASS TRANSITION TEMPERATURE; GLASS;
Subjects: CHEMISTRY AND MATERIALS > Chemistry and Materials (General)
Division/Department: Materials Science Division, Materials Science Division, Materials Science Division
Depositing User: Mr Vijaianand SK
Date Deposited: 31 Mar 2005
Last Modified: 24 May 2010 09:38
URI: http://nal-ir.nal.res.in/id/eprint/411

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