Smeared first-order phase transition in chalcogenide melts

It is shown that the semiconductor–metal transition (SMT) in chalcogenide glass-forming liquids takes place over a range of temperatures and is accompanied by an endothermic effect and structural transformation. Therefore, it should be referred to as a smeared first-order phase transition with the m...

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Bibliographic Details
Published in:Journal of non-crystalline solids 1999-10, Vol.256, p.78-82
Main Authors: Tver'yanovich, Yu.S, Ugolkov, V.L, Il'chenko, O.V
Format: Article
Language:English
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Summary:It is shown that the semiconductor–metal transition (SMT) in chalcogenide glass-forming liquids takes place over a range of temperatures and is accompanied by an endothermic effect and structural transformation. Therefore, it should be referred to as a smeared first-order phase transition with the micro-regions of co-operative structural transformations involving 10 2 or more atoms. Apparently, this mechanism of the SMT is determined by the structure of glass-forming liquids and glasses in which there are structurally self-consistent regions, i.e., by medium-range order.
ISSN:0022-3093
1873-4812
DOI:10.1016/S0022-3093(99)00322-1