Shift of CO2-I absorption bands in diamond: A pressure or compositional effect? A FTIR mapping study

  title={Shift of CO2-I absorption bands in diamond: A pressure or compositional effect? A FTIR mapping study},
  author={E P Barannik and Andrey A. Shiryaev and Thomas Hainschwang},
Infra-red maps and profiles with high spatial resolution were obtained for two single crystal diamonds with pronounced CO2 IR absorption peaks. Detailed examination allows unambiguous assignment of the spectral features to solid CO2-I phase. It is shown that the distribution of IR band positions, intensities and widths in the sample follows regular patterns and is not chaotic as was suggested in previous works where spectra of a few individual spots were analysed. Consequently, pressure effects… 
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