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A MREI Model for Zincblence‐Like Phonons in CdGa 2 (S x Se 1− x ) 4 Mixed Crystals
Author(s) -
Parisini A.,
Lottici P. P.
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.2221290211
Subject(s) - phonon , raman scattering , raman spectroscopy , chalcopyrite , polar , materials science , condensed matter physics , scattering , mineralogy , crystallography , optics , chemistry , physics , copper , quantum mechanics , metallurgy
Results are given of the Raman scattering measurements on the composition dependence of the optical phonon frequencies in the pseudoternary defect chalcopyrite mixed crystals CdGa 2 (S x Se 1− x ) 4 over all the composition range. The mode behaviour of all Raman features is tracked and a MREI (modified random element isodisplacement) model to reproduce the concentration dependence of the highest frequency polar zincblende‐like modes is presented.