Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1590929 | Science and Technology of Advanced Materials | 2006 | 5 Pages |
Abstract
Microcrystalline powders of boron-doped diamond were produced in the C-H-B system under a pressure of 8Â GPa and at a temperature of more than 2000Â K. The presence of boron in the C-B-H system was shown to decrease the temperature-pressure parameters for diamond synthesis compared with those for the binary C-H system (naphthalene). A decrease in the parameters for synthesis in the system with boron may be due to the formation of graphite with less perfect crystal structure during an intermediate stage of diamond formation. Superconducting diamond microcrystals are synthesized in the C-H-B system with boron content of about 5-10Â at% in a mixture with naphthalene. Superconductivity below 3.5Â K in boron-doped diamond powder is detected in AC magnetic susceptibility measurements.
Related Topics
Physical Sciences and Engineering
Materials Science
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Authors
E.A. Ekimov, V.A. Sidorov, A.V. Rakhmanina, N.N. Mel'nik, R.A. Sadykov, J.D. Thompson,