Premium
Lattice Dynamics of MgO
Author(s) -
Verma M. P.,
Dayal B.
Publication year - 1967
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.19670190226
Subject(s) - maxima , phonon , condensed matter physics , lattice (music) , dispersion (optics) , wave vector , physics , materials science , molecular physics , optics , art , performance art , acoustics , art history
A phenomenological model developed by the author in an earlier paper [1] is applied to the case of MgO. The two‐phonon combined density of states (C.D.S.) is computed from the calculated frequencies. The C.D.S. peaks show good agreement with the subsidiary maxima in the infrared absorption spectrum of the solid. The calculated dispersion curves agree with Pekham's measurements except for the large wave‐vector region, and the specific heats agree with the experimental observations of Barron et al.