TITLE

First principles molecular dynamics of molten NaCl

AUTHOR(S)
Galamba, N.; Costa Cabral, B. J.
PUB. DATE
March 2007
SOURCE
Journal of Chemical Physics;3/28/2007, Vol. 126 Issue 12, p124502
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
First principles Hellmann-Feynman molecular dynamics (HFMD) results for molten NaCl at a single state point are reported. The effect of induction forces on the structure and dynamics of the system is studied by comparison of the partial radial distribution functions and the velocity and force autocorrelation functions with those calculated from classical MD based on rigid-ion and shell-model potentials. The first principles results reproduce the main structural features of the molten salt observed experimentally, whereas they are incorrectly described by both rigid-ion and shell-model potentials. Moreover, HFMD Green-Kubo self-diffusion coefficients are in closer agreement with experimental data than those predicted by classical MD. A comprehensive discussion of MD results for molten NaCl based on different ab initio parametrized polarizable interionic potentials is also given.
ACCESSION #
24601903

 

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