Effect of topological thresholds on thermal behaviour of germanium telluride glasses containing metallic additive

K. Ramesh, S. Asokan, K.S. Sangunni and E.S.R. Gopal

The European Physical Journal B: Condensed Matter and Complex Systems, 1998, vol. 6, issue 2, 207-212

Abstract: Differential Scanning Calorimetric (DSC) studies on Ag x Ge 15 Te 85-x glasses have been undertaken over a wide range of compositions, to understand the effect of topological thresholds on thermal properties. It is found that the compositional dependence of glass transition temperature (T g ), crystallization temperature (T c ), activation energy for crystallization(ΔE) and thermal stability (ΔT) show anomalies at the rigidity percolation threshold. Unusual variations also observed in different thermal properties at the composition x=20, clearly establishes the occurrence of chemical threshold in these glasses. Copyright EDP Sciences, Springer-Verlag 1998

Keywords: PACS. 61.43.-j Disordered solids - 61.43.Fs Glasses - 65.90.+i Other topics in thermal properties of condensed matter (search for similar items in EconPapers)
Date: 1998
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DOI: 10.1007/s100510050543

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