MODIFIED VAN DER WAALS MODEL FOR SURFACE-MELTING DISCUSSION

L. Wojtczak and J.H. Rutkowski
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L. Wojtczak: Department of Solid State Physics, University of Lódź, ul. Pomorska 149/153, 90–236 Lódź, Poland
J.H. Rutkowski: Department of Solid State Physics, University of Lódź, ul. Pomorska 149/153, 90–236 Lódź, Poland

Surface Review and Letters (SRL), 1995, vol. 02, issue 06, 773-785

Abstract: The thermodynamic potential governing the surface-melting, considered in terms of the crystallinity and its profile is related to the Gibbs free-energy functional, leads to van der Waals equation of state. The presented construction allows us to determine the mean-field coefficients by their reference to material constants. The model is applied to the surface-melting discussion within the Landau-type mean-field theory of phase-transitions. In particular, the surface-melting temperature is estimated and temperature dependence of the surface liquid-like layer thickness profile is obtained.

Date: 1995
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DOI: 10.1142/S0218625X95000704

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