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Calculation of self-diffusion coefficients in diamond

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2 Author(s)
Zhang, Baohua ; Institute for Study of the Earth’s Interior, Okayama University, Misasa, Tottori-ken 682-0193, Japan ; Wu, Xiaoping

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In the light of recently reported pressure-volume-temperature relationships in diamond, we show that the self-diffusion coefficient of diamond as a function of temperature and pressure can be satisfactory reproduced in terms of the bulk elastic and expansivity data by means of a thermodynamical model that interconnects the parameters of point defects to the bulk properties. Our calculated self-diffusion coefficients are in good agreement with the experimental ones when the uncertainties are taken into account.

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Applied Physics Letters  (Volume:100 ,  Issue: 5 )