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

Author

Listed:
  • K. Ramesh
  • S. Asokan
  • K.S. Sangunni
  • E.S.R. Gopal

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

Suggested Citation

  • K. Ramesh & S. Asokan & K.S. Sangunni & E.S.R. Gopal, 1998. "Effect of topological thresholds on thermal behaviour of germanium telluride glasses containing metallic additive," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 6(2), pages 207-212, November.
  • Handle: RePEc:spr:eurphb:v:6:y:1998:i:2:p:207-212:10.1007/s100510050543
    DOI: 10.1007/s100510050543
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