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Lattice dynamics of AgBr at 295 K
Author(s) -
Singh R. K.,
Singh K. P.
Publication year - 1976
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.2220780228
Subject(s) - phonon , shell model , raman scattering , ionic bonding , raman spectroscopy , lattice vibration , lattice (music) , ionic crystal , silver bromide , interatomic potential , dispersion (optics) , condensed matter physics , molecular physics , materials science , physics , molecular dynamics , atomic physics , ion , silver halide , optics , quantum mechanics , nanotechnology , layer (electronics) , acoustics
The lattice dynamics of silver bromide at 295 K is studied with the three‐body‐force shell model which is adequately capable to account for the Cauchy violation and interatomic interactions in ionic crystals. The results calculated from this model are found to agree reasonably well with the measured data on the dispersion of phonons, two‐phonon Raman‐scattering, and infrared‐absorption spectra. The model reveals the physical properties equally well both at 80 and 295 K.