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Third‐Order Elastic Constants for Alkaline Earth Oxides and Fluorides
Author(s) -
Hans D.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221500107
Subject(s) - alkaline earth metal , dispersion (optics) , alkali metal , range (aeronautics) , thermodynamics , order (exchange) , materials science , earth (classical element) , elasticity (physics) , chemistry , mineralogy , inorganic chemistry , condensed matter physics , physics , composite material , optics , organic chemistry , finance , economics , mathematical physics
The interionic potential model recently developed by taking account of the composite effect of short range repulsive and dispersion forces along with three body interactions is applied to investigate the elastic behaviour of alkaline earth oxides and fluorides. Values of third‐order elastic constants and pressure derivatives of second‐order elastic constants are obtained for MgO, CaO, SrO, BaO, CaF 2 , SrF 2 , and BaF 2 crystals. The calculated values are found to present close agreement with experimental data.