Institute of Materials Science, University of Tsukuba/Earth Science Laboratory, Institute of Physical and Chemical Research (RIKEN)/Department of Chemistry, University of Electro-Communications
抄録(英)
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.
雑誌書誌ID
AA10784627
雑誌名
Proceedings of the NIPR Symposium on Antarctic Meteorites
Raman frequencies of graphitic carbon in Antarctic ureilites
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KJ00000036458
(1.03MB)
概要
