Cooling rate dependence of specific heat in systems out of equilibrium
The anomaly of specific heat in systems out of equilibrium, especially the measurement procedure dependence of specific heat, is investigated by means of free energy landscape. Introducing measurement procedure which is based on experimental method, we propose a calculation method of specific heat i...
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| Published in | The Journal of chemical physics Vol. 122; no. 4; p. 44505 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
United States
22.01.2005
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| Online Access | Get more information |
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| Summary: | The anomaly of specific heat in systems out of equilibrium, especially the measurement procedure dependence of specific heat, is investigated by means of free energy landscape. Introducing measurement procedure which is based on experimental method, we propose a calculation method of specific heat in systems out of equilibrium and find an abrupt change in specific heat between annealed and quenched states. For longer observation time the change in specific heat occurs at lower temperature and becomes sharper. For slower cooling of a system the transition temperature becomes lower. This cooling rate dependence of the transition temperature is consistent with experiments and thus the abrupt change in specific heat can be regarded as the glass transition which is thermally identified. |
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| ISSN: | 0021-9606 |
| DOI: | 10.1063/1.1840488 |