| Abstract Reversibility window in as-quenched Ge–As–S glasses (2004) | |||||||||||||
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| Thermoanalytical characteristics and Raman scattering of high purity sulfur and ternary bulk glasses GexAsxS(100K2x) for xZ4–22 at. % were studied. The intermediate phase characterized by vanishing of non-reversing heat flow DHnr, i.e. so-called the thermally reversing window was found between mean coordination number hriw2.28–2.47. Separated phase of non-crystalline cycloocta-S, manifesting itself by l-transition at w155 8C, was found for glasses with sulfur content higher than w80 at.%. Raman spectra of studied Ge–As–S glasses showed different shapes in three different areas according to three distinct phases of network glasses-floppy, intermediate, rigid. | |||||||||||||
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