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Thermally induced transformations in GexAsyTe100-x-y glasses

Srinivasan, A and Gopal, ESR (1992) Thermally induced transformations in GexAsyTe100-x-y glasses. In: Journal of Materials Science (full set), 27 (15). pp. 4208-4210.

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Abstract

Chalcogenide glasses with compositions Ge7.5AsyTe92.5-y (y = 20, 40, 45, 47.5, 50, 52.5, 55) and Ge10AsyTe90-y (y = 15, 20, 22.5, 35, 40, 45, 50) have been prepared by the melt-quenching technique. The amorphous nature of these glasses has been confirmed by X-ray powder diffractometry. The thermal stability of these glasses has been studied using differential scanning calorimetry (DSC). The compositional dependence of the glass transition temperature, T(g), the crystallization temperatures, T(c1) and T(c2), and the melting temperature, T(m), are reported. The glass-forming tendency, K(gl), and the activation energy of crystallization, E, are calculated. The activation energy decreases with increasing tellurium content for both sets of glasses.

Item Type: Journal Article
Additional Information: Copyright of this article belongs to Springer.
Keywords: Glass;Chalcogenides;Manufacturing;Amorphous state structure; Property composition relationship;Thermal properties;Thermal stability;Physical properties;Glass transition temperature;Melting point;Thermodynamic properties;Activation energy;Crystallization;X ray diffraction;Differential scanning calorimetry.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 02 Aug 2011 09:07
Last Modified: 02 Aug 2011 09:07
URI: http://eprints.iisc.ernet.in/id/eprint/37780

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