The results of the synthesis and analysis of diamond crystals with heavy boron doping (about 2%), which were obtained from mixtures of gas black with m-carborane at 8 GPa and 1873 K, are presented. A high boron concentration in the diamond lattice was confirmed by x-ray data and the characteristic Raman scattering spectra, which correspond to diamond with metallic conductivity. Thermobaric treatment of the diamond-like dl-BC3 phase (1100 K, 25 GPa) results in the formation of BC3-heteronanodiamond.
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This research was financed by a Russian Science Foundation grant (RNF 17-12-01535). Thermobaric treatment in high-pressure cells was conducted using the unique scientific facility ‘Laser heating in high-pressure cells’ at the Scientific and Technological Center of Unique Instrument Building of the Russian Academy of Sciences RAN [http://ckprf.ru/usu/507563/].
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Translated from Steklo i Keramika, No. 11, pp. 30 – 34, November, 2018.
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Zinin, P.V., Filonenko, V.P., Zibrov, I.P. et al. Synthesis of Microcrystals of Heavy-Boron-Doped Diamond and BC3-Heterodiamonds at High Pressures and Temperatures. Glass Ceram 75, 441–445 (2019). https://doi.org/10.1007/s10717-019-00108-3
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DOI: https://doi.org/10.1007/s10717-019-00108-3