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Ginzburg-Landau theory for the solid-liquid interface of bcc elementsConsideration is given to a simple order-parameter theory for the interfacial tension of body-centered-cubic solids in which the principal order parameter is the amplitude of the density wave at the smallest nonzero reciprocal-lattice vector of the solid. The parameters included in the theory are fitted to the measured heat of fusion, melting temperature, and solid-liquid density difference, and to the liquid structure factor and its temperature derivative at freezing. Good agreement is found with experiment for Na and Fe and the calculated anisotropy of the surface tension among different crystal faces is of the order of 2 percent. On the basis of various assumptions about the universal behavior of bcc crystals at melting, the formalism predicts that the surface tension is proportional to the heat of fusion per surface atom.
Document ID
19870049822
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Shih, W. H.
(Ohio State Univ. Columbus, OH, United States)
Wang, Z. Q.
(Ohio State Univ. Columbus, OH, United States)
Zeng, X. C.
(Ohio State Univ. Columbus, OH, United States)
Stroud, D.
(Ohio State University Columbus, OH, United States)
Date Acquired
August 13, 2013
Publication Date
March 15, 1987
Publication Information
Publication: Physical Review A - General Physics, 3rd Series
Volume: 35
ISSN: 0556-2791
Subject Category
Thermodynamics And Statistical Physics
Accession Number
87A37096
Funding Number(s)
CONTRACT_GRANT: NAG8-483
Distribution Limits
Public
Copyright
Other

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