Carbon self-diffusion in a natural diamond

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

doi:10.1103/PhysRevB.72.024108

Carbon self-diffusion in a natural diamond

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

惑星物質研究所

研究成果 › 査読

32 被引用数 (Scopus)

抄録

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.

本文言語	English
論文番号	024108
ジャーナル	Physical Review B - Condensed Matter and Materials Physics
巻	72
号	2
DOI	https://doi.org/10.1103/PhysRevB.72.024108
出版ステータス	Published - 7月 1 2005

ASJC Scopus subject areas

電子材料、光学材料、および磁性材料
凝縮系物理学

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10.1103/PhysRevB.72.024108

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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{\texttimes}10-5m2s [ln(-10.1±2.0)m2s]. The activation energy is approximately 30\% lower than results predicted previously from ab initio calculations.",

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AU - Koga, Kenneth T.

AU - Walter, Micheal J.

AU - Nakamura, Eizo

AU - Kobayashi, Katsura

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N2 - 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.

AB - 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.

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Carbon self-diffusion in a natural diamond

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