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Melting transitions in metallic elements correlated with shear modulus and atomic volume

Matthai, Clarence Cherian and March, N. H. 2006. Melting transitions in metallic elements correlated with shear modulus and atomic volume. Physics and Chemistry of Liquids 44 (3) , pp. 329-336. 10.1080/00319100500284926

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Abstract

We show that two quite recent treatments of dislocation-mediated melting transitions result in the thermal energy associated with the melting temperature, T m, being expressed as a product of a volume factor and a combination of elastic constants times a lattice structure-dependent factor. We further show that the result for the latent heat of fusion L m obtained in one of these studies leads to the ratio L m/GΩ, where G is the shear modulus at melting and Ω the atomic volume, being a constant. Since the ratio of the vacancy formation energy to GΩ is also found to be roughly constant, we suggest that the factor GΩ at melting is crucial in determining the melting temperature, the latent heat of fusion and the vacancy formation energy and we comment on the reasons why this should be so.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Physics and Astronomy
Subjects: Q Science > QC Physics
Publisher: Taylor & Francis
ISSN: 0031-9104
Last Modified: 04 Jun 2017 05:03
URI: http://orca.cf.ac.uk/id/eprint/47781

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