Abstract

The irradiation effects of 2 MeV He + and Ar + ions on the film structure of the C–Si system were investigated with RHEED and XPS. The formation of SiC phase and/or the growth of epitaxial SiC were possible by He + irradiation for the carbon films up to 0.7 nm in thickness, which was thinner than that by Ar + irradiation. The He + irradiation could not grow the turbostratic graphite which could be grown by Ar + irradiation. The mechanism of the formation and the epitaxial growth of SiC by ion irradiation was discussed from the view point of the energy transfer from the irradiated ions.

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