Carbon self-diffusion in a natural diamond

Kenneth T. Koga, Micheal J. Walter, Eizo Nakamura, Katsura Kobayashi

    Research output: Contribution to journalArticlepeer-review

    25 Citations (Scopus)

    Abstract

    We report experimentally determined self-diffusion coefficients for carbon in a type-IaA diamond at pressure and temperature conditions within diamond stability field at 10GPa and 2075-2375K. The activation energy of diffusion is 6.8±1.6eV and a preexponent constant is of 4.1×10-5m2s [ln(-10.1±2.0)m2s]. The activation energy is approximately 30% lower than results predicted previously from ab initio calculations.

    Original languageEnglish
    Article number024108
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume72
    Issue number2
    DOIs
    Publication statusPublished - Jul 1 2005

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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