Structural and magnetic study of electron- and proton-irradiated graphite tiles

  • Kweon, Jin-Jung (Department of Physics and Institute for Nano Science, Korea University) ;
  • Lee, Kyu-Won (Department of Physics and Institute for Nano Science, Korea University) ;
  • Park, Jun-Kue (Department of Physics and Institute for Nano Science, Korea University) ;
  • Jeon, Gi-Wan (Department of Physics and Institute for Nano Science, Korea University) ;
  • Kim, Hyo-Jung (Department of Physics and Institute for Nano Science, Korea University) ;
  • Lee, Cheol-Eui (Department of Physics and Institute for Nano Science, Korea University) ;
  • Noh, S.J. (Department of Applied Physics, Dankook University) ;
  • Kim, H.S. (Department of Applied Physics, Dankook University)
  • Published : 2011.12.05

Abstract

We have carried out spectroscopic studies on the physical properties of graphite tiles modified by electron and proton irradiation. While increase in local order was observed in the electron-irradiated sample, structural disorder and amorphization were revealed in the proton-irradiated sample, with considerably decreased electrical conductivity. Besides, C-OH bond with a sp3 configuration was identified in the proton-irradiated sample, apparently giving rise to a narrow ESR peak ascribed to localized spins.

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