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Configurational entropy and the stability limit of a glass

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
104
Issue
11
Identifiers
DOI: 10.1016/s0038-1098(97)10012-6
Keywords
  • A. Disordered Systems
  • A. Metals
  • D. Thermal Expansion
  • D. Thermodynamic Properties
  • D. Anharmonicity
Disciplines
  • Physics

Abstract

Abstract We propose a simple method of estimating the configurational entropy of a glass from thermodynamic considerations and thermal expansion measurements and apply it to a bulk metallic glass of composition Zr 65Ni 10Cu 17.5Al 7.5 which has important technological applications. We also calculate the Gibb's free energy difference between the glassy and the crystalline states which measures the thermal stability of the glassy phase. Our method also predicts a new isentropic instability temperature beyond which a glass cannot be superheated.

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