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Temperature Dependence of Raman Spectra in BaTiO 3
Author(s) -
Li LiMing,
Jiang YiJian,
Zeng LingZhi
Publication year - 1996
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/(sici)1097-4555(199607)27:7<503::aid-jrs986>3.0.co;2-i
Subject(s) - raman spectroscopy , raman scattering , x ray raman scattering , ferroelectricity , coherent anti stokes raman spectroscopy , phonon , phase transition , spectral line , condensed matter physics , materials science , crystal (programming language) , chemistry , scattering , molecular physics , optics , physics , optoelectronics , astronomy , computer science , dielectric , programming language
The temperature dependence of both Stokes and anti‐Stokes Raman spectra in a BaTiO 3 single crystal was studied. Based on the theory of the Raman scattering cross‐section for one‐ and two‐phonon scattering, the strong bands at 275 and 514 cm −1 in the X ( ZZ ) Y geometry are confirmed to be of first order. This supports the order–disorder model of the ferroelectric phase transition.