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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 12, Pages 880–883
(Mi jetpl2192)
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This article is cited in 11 scientific papers (total in 11 papers)
CONDENSED MATTER
Inverted EPR signal from nitrogen defects in a synthetic diamond single crystal at room temperature
N. A. Poklonskii, N. M. Lapchuk, T. M. Lapchuk Belarusian State University, Minsk
Abstract:
Electron paramagnetic resonance (EPR) in diamond single crystals was studied. The crystals were grown using apparatuses of the “split-sphere” type in a Ni–Fe–C system using the temperature gradient method with a subsequent high-temperature high-pressure treatment. It was found that, after the high-temperature high-pressure treatment of a diamond sample, the EPR signal from the lattice defects containing nitrogen atoms became inverted with the growth of the microwave power in an $H_{102}$ resonator. In a constant polarizing magnetic field, when the microwave power applied to the diamond was low, a resonance absorption by the nitrogen defects took place, whereas, when the microwave power was high, an emission was observed. The inversion of the EPR lines of a single nitrogen atom substituting for a carbon atom at a diamond lattice site could be caused by the presence of a nickel atom with an uncompensated magnetic moment at the adjacent tetrahedral interstitial site. In synthetic diamond crystals that were not subjected to high-temperature high-pressure treatment, the inversion of the EPR signal from nitrogen atoms (P1 centers, nitrogen in the C form) was absent.
Received: 09.11.2004
Citation:
N. A. Poklonskii, N. M. Lapchuk, T. M. Lapchuk, “Inverted EPR signal from nitrogen defects in a synthetic diamond single crystal at room temperature”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:12 (2004), 880–883; JETP Letters, 80:12 (2004), 748–751
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https://www.mathnet.ru/eng/jetpl2192 https://www.mathnet.ru/eng/jetpl/v80/i12/p880
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Abstract page: | 287 | Full-text PDF : | 244 | References: | 40 |
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