Rings, chains and planes: Variation of T(g) with composition in chalcogenide glasses
We propose a microscopic, phenomenological model for the decrease in the viscosity observed at glass transition. Our model is primarily applicable to chalcogenide glasses. According to this model, the decrease in the viscosity at glass transition is mainly due to the breaking of the Van der Waals bo...
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| Published in: | Bulletin of materials science Vol. 29; no. 4; pp. 371 - 374 |
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| Main Author: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
01-08-2006
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| Online Access: | Get full text |
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| Summary: | We propose a microscopic, phenomenological model for the decrease in the viscosity observed at glass transition. Our model is primarily applicable to chalcogenide glasses. According to this model, the decrease in the viscosity at glass transition is mainly due to the breaking of the Van der Waals bonds in the chal-cogenides. Using this model, we derive a relationship between the glass transition temperature, T(g) and the molar volume V(m). The validity of this relation is checked using experimental data available in the literature for two binary systems (Ge-Se and As-S) and a pseudo-binary system(As40SexTe60-x) |
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| Bibliography: | ObjectType-Article-2 SourceType-Scholarly Journals-1 content type line 23 ObjectType-Feature-1 |
| ISSN: | 0250-4707 |