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Study of the Temperature Dependence of the Dielectric Properties of LiTaO 3 by Raman Spectroscopy
Author(s) -
Umarov B. S.,
Vetelino J. F.,
Abdullaev N. S.,
Anikiev A. A.
Publication year - 1980
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.2221010226
Subject(s) - raman spectroscopy , dielectric , raman scattering , phonon , kramers–kronig relations , spectral line , reflection (computer programming) , materials science , condensed matter physics , phase transition , phase (matter) , atmospheric temperature range , chemistry , optics , physics , optoelectronics , thermodynamics , refractive index , quantum mechanics , organic chemistry , computer science , programming language
The phonon spectra of the A 1 ‐type symmetry vibrations in LiTaO 3 , are measured by Raman scattering techniques over a wide temperature range which include the phase transition point. These spectra are then analyzed using the Kramers‐Kronig relations to obtain the temperature and frequency dependence of the static dielectric constant, ϵ zz , and the infrared (IR) reflection spectra. Good agreement is obtained with results of direct experimental measurement.