Journal
JOURNAL OF APPLIED PHYSICS
Volume 102, Issue 5, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.2775539
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Raman and infrared absorption spectra of solid carbon dioxide (CO2) have been measured at high pressures up to 80 GPa and room temperature. The broadening and weakening of lattice vibrational signals and the disappearance of molecular vibration were detected at 65 GPa by means of the Raman and infrared absorption experiments, respectively. The present Raman spectral feature is exactly the same as that of amorphous CO2 synthesized around 600 K and 60 GPa [M. Santoro , Nature (London) 441, 857 (2006)]. It is demonstrated that the polymerization of CO2 proceeds even at room temperature and almost independently of temperature. (C) 2007 American Institute of Physics.
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