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Article
Thermodynamics of solid and liquid EAM metals: A variational study
Journal of Chemical Physics (1991)
  • Richard Alan Lesar, Los Alamos National Laboratory
  • R. Najafabadi
  • D. J.
Abstract
We present results of variational calculations of the Helmholtz free energy and the thermodynamic properties of a series of metallic liquids and solids (Ag,Au,Cu,Ni, Pd, Pt) described by embedded‐atom‐method potentials. For the solids, we use a variational procedure based on an Einstein‐model reference state. The free energies of liquids are calculated with an approximate variational method proposed by Ross. At the respective melting points, the present results for the Helmholtz free energy are within about 1% of the results of accurate Monte Carlo (MC) calculations with the same interaction potentials, both for the fluid and the solid. The average error in the melting points calculated with the present procedure relative to Monte Carlo results is about 7.5%. The internal energies and entropies are compared to MC results, and show, in general, good agreement.
Keywords
  • Hemlhlotz free engery,
  • liquid metals,
  • gold,
  • liquid sold interfaces,
  • Monte Carlo methods
Disciplines
Publication Date
1991
Publisher Statement
Copyright 1991 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.
Citation Information
Richard Alan Lesar, R. Najafabadi and D. J.. "Thermodynamics of solid and liquid EAM metals: A variational study" Journal of Chemical Physics Vol. 94 (1991)
Available at: http://works.bepress.com/richard_lesar/18/