Premium
Multiple‐Scattering‐Theory Calculation of Elastic and Dielectric Properties of Alkali‐Halide Solid Solutions
Author(s) -
Middya T. R.,
Roy D.,
Basu A. N.
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.2221460110
Subject(s) - halide , alkali metal , dielectric , scattering , materials science , field (mathematics) , condensed matter physics , chemistry , physics , inorganic chemistry , optics , mathematics , quantum mechanics , optoelectronics , pure mathematics
With increasing concentration of defects in a crystal, when the defect–defect interaction starts dominating, the absence of a smallness parameter makes all the low concentration theories inapplicable. This interaction is treated here approximately via a mean field generated self‐consistently as envisioned in the multiple‐scattering‐theory. For the different alkali‐halide solid solutions considered, this approach reproduces both elastic and dielectric data at all concentrations without any parameter. The results thus obtained compare satisfactorily with experiment in most cases. Finally some of the limitations of this approach are pointed out.