Thermomechanical and structural characterization of GeSe2-Sb2Se3-ZnSe glasses

On the basis of thermal and physicochemical properties of multicomponent GeSe2-Sb2Se3-ZnSe glasses, several microstructural characteristics such as glass-forming ability (K-g1), compactness (C), micro-voids volume (V-h), their formation energy (E-h), module of elasticity (E) and apparent activation energy of glass transition (E-a) have been determined. Their compositional dependencies have shown that all these parameters increase at higher GeSe2 content, remaining almost constant in the range of 63-72 mol% GeSe2. The distribution of the corresponding structural units has been discussed on the basis of Raman scattering data. (C) 2002 Elsevier Science B.V. All rights reserved.