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Nitrogen-Doped Chemical Vapour Deposited Diamond: a New Material for Room-Temperature Solid State Maser |
| N. A. Poklonski1;N. M. Lapchuk1;A. V. Khomich2;LU Fan-Xiu3;TANG Wei-Zhong3;V. G. Ralchenko4;I. I. Vlasov4;M. V. Chukichev5;Sambuu Munkhtsetseg1,6 |
| 1Department of Physics, Belarusian State University, Minsk 220030, Belarus2V. A. Kotelnikov Institute of Radio Engineering and Electronics, Russia Academy of Sciences, Fryazino 141191, Russia3School of Material Science and Engineering, University of Science and Technology Beijing, Beijing 1000834A. M. Prokhorov General Physics Institute, Russia Academy of Sciences, Moscow 119991, Russia5Department of Physics, M. V. Lomonosov Moscow State University, Moscow 119899, Russia6National University of Mongolia, Ulaanbaatar 210646, Mongolia |
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| Cite this article: |
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N. A. Poklonski, N. M. Lapchuk, A. V. Khomich et al 2007 Chin. Phys. Lett. 24 2088-2090 |
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Abstract Electron spin resonance (ESR) in polycrystalline diamond films grown by dc arc-jet and microwave plasma chemical vapour deposition is studied. The films with nitrogen impurity concentration up to 8×1018cm-3 are also characterized by Raman, cathodoluminescence and optical absorption spectra. The ESR signal from P1 centre with g-factor of 2.0024 (nitrogen impurity atom ccupying C site in diamond lattice) is found to exhibit an inversion with increasing the microwave power in an H102 resonator. The spin inversion effect could be of interest for further consideration of N-doped diamonds as a
medium for masers operated at room temperature.
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76.30.-v. 81.05.Uw
84.40.Ik
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Received: 22 March 2007
Published: 25 June 2007
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