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Theory of melting

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Czechoslovak Journal of Physics Aims and scope

Abstract

The paper deals with the description of the melting phenomena in thin films with surfaces. The model is based on the Lindemann criterion applied to the mean square displacements of atoms from their equilibrium positions at the surface and inside the sample. The harmonic approximation for the interaction potential is taken into account, however, the force effective parameters are evaluated by the elastic constants whose temperature and pressure dependence allows us to consider the mean square displacements at the pseudoharmonic level. The discussion of the results shows that the film starts to melt on the surface at the temperature lower than the melting temperature. This effect corresponds to the surface melting whose main properties can be predicted. Moreover, a new type of melting kinetics is interpreted.

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Authors and Affiliations

  1. Department of Chemical Physics, Faculty of Mathematics and Physics, Charles University, Ke Karlovu 3, 12116, Praha 2, Czech Republic

    Luboš Valenta

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  1. Luboš Valenta
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Additional information

Devoted to the memory of the late Professor Luboš Valenta. He himself prepared the main part of the manuscript of the paper; the text, particularly the concluding remarks, has been adjusted by L. Wojtczak. The calculations leading to Fig. 6 have been performed by J. Czerbniak and T. Gwizdałła.

The paper was financially supported by the Project KBN 201949101/92-94.

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Valenta, L. Theory of melting. Czech J Phys 46, 607–619 (1996). https://doi.org/10.1007/BF01690679

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  • DOI: https://doi.org/10.1007/BF01690679

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