Journal of the Physical Society of Japan
Online ISSN : 1347-4073
Print ISSN : 0031-9015
ISSN-L : 0031-9015
On a Non-linear Approximation of the Interatomic Force in Solid
Junkichi SomaMasamichi Ogi
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1953 Volume 8 Issue 1 Pages 6-8

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Abstract
We take new non-linear approximation for the interatomic force in a solid. We calculate the thermal expansion of some materials, and get good agreement with experiment. And it is easily shown that using this non-linear potential conserves type of partition function of linear model.
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