A self-consistent pseudopotential applied to transport coefficients of liquid binary alloys of alkali metals

S. Wang, S. K. Lai, C. B. So

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Abstract

The energy-independent model pseudopotential theory, developed and used previously for simple metals, is extended to the binary alloys of these simple metals and a self-consistent pseudopotential, which contains a detailed concentration dependence, is derived for the calculation of various properties of these alloys. This pseudopotential is applied within a low-order perturbation theory to calculate the form factors and transport coefficients for the K-Rb, Na-K and Na-Cs alloys in the liquid state. The calculated results show that a very significant fraction of the valence electrons is localised on the electronegative component in the liquid Na-Cs alloy, as compared with the other alloys considered, and, as a result, the electrical resistivity is very much greater for the liquid Na-Cs alloy than for the liquid Na-K and K-Rb alloys, as demonstrated in experiment. Finally, the applicability of the pseudopotential perturbation theory to the liquid alloys of simple metals is discussed.

Original languageEnglish
Article number015
Pages (from-to)445-449
Number of pages5
JournalJournal of Physics F: Metal Physics
Volume10
Issue number3
DOIs
StatePublished - 1980

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