Premium
Infrared Lattice Vibration, Dielectric Dispersion, and Lattice Dynamics of BaFCl
Author(s) -
Sieskind M.,
Ayadi M.,
Zachmann G.
Publication year - 1986
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.2221360212
Subject(s) - lattice vibration , infrared , lattice (music) , ion , dielectric , fourier transform , dispersion (optics) , spectrometer , reflection (computer programming) , materials science , optics , condensed matter physics , analytical chemistry (journal) , physics , phonon , chemistry , optoelectronics , quantum mechanics , chromatography , computer science , acoustics , programming language
The reflectivity of single crystals of BaFCl is measured in the wave number range from 30 to 5000 cm −1 at room temperature using a Fourier transform infrared spectrometer. The recorded reflection spectra are evaluated by means of the classical oscillator model and the Kramers Kronig analysis in order to get the TO and LO frequencies and the optical constants. The calculated effective dynamical charges of the involved ions are found to be in good agreement with the results obtained using a shell model.