Heat capacity at the glass transition

Trachenko, Kostya and Brazhkin, V. V. (2011) Heat capacity at the glass transition. Physical Review B, 83 (1). 014201. DOI https://doi.org/10.1103/PhysRevB.83.014201

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Abstract

A fundamental problem of glass transition is to provide a quantitative and microscopic explanation of the heat-capacity jump at the glass transition temperature Tg. Similar problems are also common to other disordered systems, including spin glasses. We propose that the jump of heat capacity at Tg takes place as a result of the change of the liquid’s elastic, vibrational, and thermal properties. In this theory, we discuss time-dependent effects of glass transition, and identify three distinct regimes of relaxation. Our approach explains a widely observed logarithmic increase of Tg with the quench rate and correlation of the heat-capacity jump with liquid fragility.

Item Type:	Article
Uncontrolled Keywords:	2010AREP; IA62;
Subjects:	03 - Mineral Sciences
Divisions:	03 - Mineral Sciences
Journal or Publication Title:	Physical Review B
Volume:	83
Page Range:	014201
Identification Number:	https://doi.org/10.1103/PhysRevB.83.014201
Depositing User:	Sarah Humbert
Date Deposited:	25 Mar 2011 16:56
Last Modified:	23 Jul 2013 10:02
URI:	http://eprints.esc.cam.ac.uk/id/eprint/2035

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