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First and second order Raman scattering of monocrystalline CuCl
Author(s) -
Prevot B.,
Sieskind M.
Publication year - 1973
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.2220590112
Subject(s) - raman spectroscopy , raman scattering , phonon , atomic physics , polarization (electrochemistry) , chemistry , physics , optics , materials science , condensed matter physics
A detailed study of the first and second order Raman effect in CuCl is presented using either He–Ne or Ar‐ion laser beam. The spectrum is observed at room and liquid N 2 temperature. For the first time, at room temperature a pronounced polarization effect on the 65 cm −1 line was observed when looked either at the Γ 15 component of the spectrum or at the Γ 1 and Γ 12 ones. In the lower part of the Raman shift, the Γ 15 spectrum is the strongest, whereas the Γ 1 , Γ 12 contributions become more visible beyond 200 cm −1 but weaker by an order of magnitude. Using recent neutron scattering data (slightly corrected for optical phonons) the major peaks are explained by superimposed lines rather than by isolated processes. The most parts of the features are well interpreted. The lines at 162 and 199 cm −1 are shown to have a similar temperature shift while the 123 cm −1 one behaves quite different.