TY - JOUR
T1 - Effect of pressure on Fermi resonance in orthorhombic high-pressure phase-III and of isotopic species of CO2
AU - Olijnyk, H.
AU - Jephcoat, A. P.
N1 - Funding Information:
Support for this project was provided in part by the European Community under Contract SCI*CT920802.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 1999/4/2
Y1 - 1999/4/2
N2 - Pressure tuning of Fermi resonance was studied by Raman scattering in the high-pressure phase CO2-III and for some natural abundant isotopic species. The observed changes in the spectral features of the host crystal suggest that pressure strongly weakens FR and the transition from a two-phonon bound state to a two-phonon unbound state takes place in the 2v2 region between 30 and 40 GPa. It appears that the differences in FR of the isotopic species are mainly controlled by the frequency shifts introduced by the different isotopic masses.
AB - Pressure tuning of Fermi resonance was studied by Raman scattering in the high-pressure phase CO2-III and for some natural abundant isotopic species. The observed changes in the spectral features of the host crystal suggest that pressure strongly weakens FR and the transition from a two-phonon bound state to a two-phonon unbound state takes place in the 2v2 region between 30 and 40 GPa. It appears that the differences in FR of the isotopic species are mainly controlled by the frequency shifts introduced by the different isotopic masses.
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U2 - 10.1016/S0921-4526(98)01315-5
DO - 10.1016/S0921-4526(98)01315-5
M3 - Conference article
AN - SCOPUS:0033515284
VL - 265
SP - 54
EP - 59
JO - Physica B: Condensed Matter
JF - Physica B: Condensed Matter
SN - 0921-4526
IS - 1-4
ER -