https://doi.org/10.1007/s100510050543
Effect of topological thresholds on thermal behaviour of germanium telluride glasses containing metallic additive
1
Department of Physics, Indian Institute of Science, Bangalore 560012, India
2
Department of Instrumentation, Indian Institute of Science, Bangalore 560012, India
Corresponding author: a kramesh@physics.iisc.ernet.in
Received:
27
January
1998
Revised:
12
June
1998
Accepted:
3
July
1998
Published online: 15 November 1998
Differential Scanning Calorimetric (DSC) studies on
AgxGe15Te
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 
, crystallization temperature 
, activation energy for
crystallization 
and thermal stability 
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.
PACS: 61.43.-j – Disordered solids / 61.43.Fs – Glasses / 65.90.+i – Other topics in thermal properties of condensed matter
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 1998
