Инд. авторы:	Nadolinny V., Komarovskikh A., Pal'yanov Y.N., Kupriyanov I.
Заглавие:	EPR of new phosphorus-containing centers in synthetic diamonds
Библ. ссылка:	Nadolinny V., Komarovskikh A., Pal'yanov Y.N., Kupriyanov I. EPR of new phosphorus-containing centers in synthetic diamonds // Physica Status Solidi. A - Applications and Materials Science. - 2013. - Vol.210. - Iss. 10. - P.2078-2082. - ISSN 1862-6300. - EISSN 1862-6319.
Внешние системы:	DOI: 10.1002/pssa.201300037; SCOPUS: 2-s2.0-84886088331;
Реферат:	eng: This work is devoted to studying the effect of electron and X-ray irradiation on phosphorus centers in synthetic diamonds grown in the P-C system by high-pressure high-temperature method (BARS technology). A new paramagnetic NP6 phosphorus-containing center was found in annealed at 2573 K and 7.5 GPa diamonds after X-ray irradiation in addition to NP4 and NP5 phosphorus centers. NP6 center has electron spin S = 1/2, g1 = 2.00085, g2 = 2.00083, g3 = 2.00083 and hyperfine structure (HFS) of one phosphorus atom with parameters: A1 = 7.585 mT, A2 = 2.942 mT, A3 = 2.328 mT. It is supposed that NP4-NP6 centers are genetically related to three NP1-NP3 nitrogen-phosphorus centers and are formed as the tetrahedral environment of a phosphorus atom is transformed into the octahedral environment at annealing temperature of 2573 K. Synthetic diamonds annealed at 2573 K were subsequently subjected to irradiation with electrons with energy of 3.5 MeV (5 × 1017 e cm-2) and annealing at 773 and 973 K. It was ascertained by the electron paramagnetic resonance (EPR) studies that annealing of the crystals irradiated with electrons gave rise to a new paramagnetic center NP7 with electron spin S = 1 and HFS of one phosphorus atom with parameters: g = 2.0012, D = 1.97 mT and A(P) = 0.36 mT. The center hypothetically has a structure of eight-vacancy chain with a phosphorus atom in its center. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Ключевые слова:	Phosphorus; Synthetic diamonds; Spin dynamics; Paramagnetism; Paramagnetic resonance; Magnetic resonance; Magnetic moments; Irradiation; High pressure effects; Diamonds; Defects; Annealing; X ray irradiation; Phosphorus atom; Paramagnetic centers; Octahedral environment; Hyperfine structure; High temperature; Electron paramagnetic resonances (EPR); Annealing temperatures; phosphorus; EPR; diamond; defects;
Издано:	2013
Физ. характеристика:	с.2078-2082