Many‐Body Effects on the Third‐Order Elastic Constants of Alkaline Earth Fluorides

1 January 1980

journal article
research article
Published by Wiley in Physica Status Solidi (b)

Vol. 97 (1) , 203-208
https://doi.org/10.1002/pssb.2220970122

Abstract

Expressions for the third‐order elastic (TOE) constants are derived from the Lundqvist potential for the non‐centrosymmetric solids crystallizing in the fluorite structure. The values of the TOE constants determined from these expressions agree fairly well with the measured values for CaF₂, SrF₂, and BaF₂ and show significant improvements over the values obtained in other theoretical studies.

Keywords

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