Raman frequencies of graphitic carbon in Antarctic ureilites

• Hiroyuki Kagi

• Kazuya Takahashi

• Akimasa Masuda

Abstract

type:P(論文)

Raman frequencies for the in-plane lattice vibration of graphite were surveyed for four Antarctic ureilites in order to construct a paradigm for structural properties of graphitic carbon in ureilites. Raman spectra were obtained by point-by-point measurements using a laser microbeam 1μm in diameter. The measured results formed an array in a two-dimensional plot between the E_<2g> frequency and intensity ratio of two graphite-derived Raman bands. The graphitic matter in ALH-78019 gave the averaged E_<2g> frequency at 1582.0 ⊿cm^<-1>, which agrees with the well-established wavenumber of the E_<2g> in-plane lattice vibration of graphite. On the contrary, some graphitic matter in the ureilites (ALH-77257,Y-791538 and MET-78008) exhibited considerably up-shifted E_<2g> frequency. Distribution in the array was proved to be closely linked to the extent of shock which the ureilites suffered.

Journal

• Proceedings of the NIPR Symposium on Antarctic Meteorites

  Proceedings of the NIPR Symposium on Antarctic Meteorites 7 252-261, 1994-03

  National Institute of Polar Research

Details

• CRID: 1390009224916955136
• NII Article ID: 110000030013
• NII Book ID: AA10784627
• DOI: 10.15094/00004652
• Web Site: http://id.nii.ac.jp/1291/00004652/
• Text Lang: en
• Data Source:
  • JaLC
  • IRDB
  • CiNii Articles