Composition dependence of glass transition temperature and fragility. I. A topological model incorporating temperature-dependent constraints
We present a topological model for the composition dependence of glass transition temperature and fragility. Whereas previous topological models are derived for zero temperature conditions, our approach incorporates the concept of temperature-dependent constraints that freeze in as the system is coo...
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| Veröffentlicht in: | The Journal of chemical physics 2009-03, Vol.130 (9), p.094503-094503 |
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| container_end_page | 094503 |
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| container_title | The Journal of chemical physics |
| container_volume | 130 |
| creator | Gupta, Prabhat K Mauro, John C |
| description | We present a topological model for the composition dependence of glass transition temperature and fragility. Whereas previous topological models are derived for zero temperature conditions, our approach incorporates the concept of temperature-dependent constraints that freeze in as the system is cooled from high temperature. Combining this notion of temperature-dependent constraints with the Adam-Gibbs model of viscosity, we derive an analytical expression for the scaling of glass transition temperature and fragility in the binary Ge(x)Se(1-x) system. In the range of 0 |
| doi_str_mv | 10.1063/1.3077168 |
| format | Article |
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| source | AIP Journals Complete; AIP Digital Archive; Alma/SFX Local Collection |
| title | Composition dependence of glass transition temperature and fragility. I. A topological model incorporating temperature-dependent constraints |
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