Freezing of Simple Liquid Metals

Details Freezing of Simple Liquid Metals Freezing of Simple Liquid Metals

1999-10-12

arxiv.org/abs/cond-mat/9910177v1

J. Non-Crystalline Solids 250-252, 15 (1999)

Physics

Condensed Matter

Materials Science

8 pages, 4 figures, LaTeX with elsart.sty

Scientific paper

10.1016/S0022-3093(99)00108-8

Freezing of simple liquid metals and the relative stabilities of competing crystalline solids are investigated using thermodynamic perturbation theory, the interactions between ions being modeled by effective pair potentials derived from pseudopotential theory. The ionic free energy of the solid phase is calculated, to first order in the perturbation potential, using classical density-functional theory and an accurate approximation to the hard-sphere radial distribution function. Free energy calculations for Na, Mg, and Al yield well-defined freezing transitions and structural free energy differences for bcc, fcc, and hcp crystals in qualitative agreement with experiment.

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