Abstract
Ge1-xSnxSe2 chalcogenide glasses, within the composition range 0.1≤ x ≤0.6, were prepared from high purity constituent elements. Differential scanning calorimetry (DSC) measurements on these glasses were undertaken to determine their glass transition (Tg) and crystallization (Tc) temperatures and to evaluate their thermal stability. It is found that both Tg and Tc decrease upon the increase of Sn concentration in the glass. The temperature interval ΔT=Tc-Tg is also found to decrease with increasing x which is indicative of the decrease of their thermal stability. The compactness, the number of
constraints per atom, the average coordination number, and the overall mean bond energy of the network are also calculated and discussed.
Keywords
Disordered systems, Chemical synthesis, Thermal properties.
Citation
G. SAFFARINI, J. M. SAITER, Composition dependence of the physico-chemical properties in Ge1-xSnxSe2 chalcogenide glasses, Optoelectronics and Advanced Materials - Rapid Communications, 4, 10, October 2010, pp.1624-1627 (2010).
Submitted at: May 16, 2010
Accepted at: Oct. 14, 2010