Synthesis of Superconducting Boron-Doped Diamond in Carbon and Boron Solutions in Molten Gold and Copper

E. A. Еkimov; Екимов Е. А.; V. A. Sidorov; Сидоров В. А.; R. A. Khmel’nitskii; Хмельницкий Р. А.; S. G. Lyapin; Ляпин С. Г.

doi:10.31857/S0002337X23090038

Synthesis of Superconducting Boron-Doped Diamond in Carbon and Boron Solutions in Molten Gold and Copper

作者: Еkimov E.A.¹, Sidorov V.A.¹, Khmel’nitskii R.A.², Lyapin S.G.¹
隶属关系:
1. Vereshchagin Institute for High Pressure Physics, Russian Academy of Sciences
2. Lebedev Institute of Physics, Russian Academy of Sciences
期: 卷 59, 编号 9 (2023)
页面: 959-965
栏目: Articles
URL: https://rjeid.com/0002-337X/article/view/668116
DOI: https://doi.org/10.31857/S0002337X23090038
EDN: https://elibrary.ru/GFHCWK
ID: 668116

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详细

The Au–B–C and Cu–B–C growth systems, which do not form borides, have been used for the first time for the synthesis of boron-doped superconducting diamond. In these systems, the graphite-to-diamond transformation occurs at pressures from 8 to 9 GPa and temperatures from 1620 to 1770 K, suitable for commercial-scale production. The presence of boron in melts is assumed to be responsible for the decrease in synthesis temperature in molten copper and the diamond-forming ability of gold-based melts. The synthesized diamond exhibits metallic behavior of conductivity at ordinary temperatures and undergoes a superconducting transition between 4.5 and 2.5 K.

关键词

superconductivity, diamond, synthesis, boron, gold, copper

参考

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