Abstract
The paper reports data on the linear growth rates of synthetic diamond single crystals grown at high P–T parameters by the temperature-gradient technique in the Fe–Ni–C system. Techniques of stepwise temperature changes and generation of growth microzoning were applied to evaluate the growth rates of various octahedral and cubic growth sectors and variations in these rates with growth time. The maximum linear growth rates of the order of 100–300 µm/h were detected at the initial activation of crystal growth, after which the growth rates nonlinearly decreased throughout the whole growth time to 5–20 µm/h. The fact that the linear growth rates can broadly vary indicates that the inner structure and growth dynamics of single diamond crystals grown by the temperature-gradient technique should be taken into account when applied in mineral–geochemical studies (capture of inclusions, accommodation of admixture components, changes of the defective structure, etc.).
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Original Russian Text © Y.V. Babich, B.N. Feigelson, A.I. Chepurov, 2016, published in Geokhimiya, 2016, No. 9, pp. 814–820.
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Babich, Y.V., Feigelson, B.N. & Chepurov, A.I. Linear growth rate and sectorial growth dynamics of diamond crystals grown by the temperature-gradient techniques (Fe–Ni–C system). Geochem. Int. 54, 781–787 (2016). https://doi.org/10.1134/S0016702916080036
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DOI: https://doi.org/10.1134/S0016702916080036