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Dispersion of Dielectric Axes in Monoclinic and Triclinic Crystals Related to Lattice Dynamics
Author(s) -
Merten L.,
Claus R.
Publication year - 1978
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.2220890119
Subject(s) - triclinic crystal system , monoclinic crystal system , condensed matter physics , dielectric , transverse plane , lattice (music) , wave vector , dispersion (optics) , materials science , phonon , dispersion relation , optics , physics , crystal structure , crystallography , chemistry , acoustics , optoelectronics , structural engineering , engineering
It is shown that the infrared orientational frequency dispersion of dielectric axes in monoclinic and triclinic crystals is determined by those polartion wave vector directions in which purely transverse modes exist. Simultaneously the wave vector directions of purely longitudinal phonons are obtained.