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Phonon Dispersion in Platinum and Palladium
Author(s) -
Rajput A.
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.2221280206
Subject(s) - palladium , phonon , platinum , dispersion (optics) , condensed matter physics , lattice (music) , materials science , dispersion relation , phenomenological model , transition metal , chemistry , physics , optics , catalysis , biochemistry , acoustics
Abstract A phenomenological model that takes into account both, two‐ and three‐body interactions is developed for the calculation of the phonon frequency spectra of a homogeneously strained facecentred cubic (f.c.c.) crystal. The model is tested by applying it to the calculation of phonon dispersion curves and lattice heat capacity of the transition metals platinum and palladium. The theoretical results are found to agree well with the corresponding experimental data.