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Analysis of Photoelastic Behaviour of Fluorite‐Structure Crystals
Author(s) -
Dutt N.,
Sharma O. P.,
Shanker J.
Publication year - 1985
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.2221270104
Subject(s) - polarizability , fluorite , dielectric , refractive index , ion , hydrostatic pressure , materials science , electronic structure , condensed matter physics , chemistry , thermodynamics , computational chemistry , physics , optoelectronics , metallurgy , organic chemistry , molecule
An analysis of the photoelastic behaviour of fluorite‐structure crystals is performed by considering the existing theories of electronic polarizabilities of ions. On the basis of experimental and theoretical information available for electronic polarizabilities it is assumed that the change in polarizability due to strain under the effect of hydrostatic pressure is mainly arising from the change in anion polarizability. Values of strain polarizability parameters and volume derivatives of refractive index or electronic dielectric constant are evaluated and compared with experimental data for CaF 2 , SrF 2 , BaF 2 , PbF 2 , Sr(NO 3 ) 2 , Ba(NO 3 ) 2 , and Pb(NO 3 ) 2 crystals.