Инд. авторы:	Mashkovtsev R.I., Pan Y.
Заглавие:	Five new E′ centers and their 29Si hyperfine structures in electron-irradiated α-quartz
Библ. ссылка:	Mashkovtsev R.I., Pan Y. Five new E′ centers and their 29Si hyperfine structures in electron-irradiated α-quartz // Physics and Chemistry of Minerals. - 2012. - Vol.39. - Iss. 1. - P.79-85. - ISSN 0342-1791. - EISSN 1432-2021.
Внешние системы:	DOI: 10.1007/s00269-011-0462-z; SCOPUS: 2-s2.0-84855186571;
Реферат:	eng: Single-crystal electron paramagnetic resonance (EPR) spectra of fast-electron-irradiated quartz, after annealing at 120 and 200°C, reveal five new E′ type centers, herein labeled E ′ 5, E ′ 6, E ′ 7, E ′ 8 and E ′ 9. Centers E ′ 5, E ′ 7 and E ′ 9 are characterized by the orientations of the unique principal g and A( 29Si) axes close to a short Si-O bond direction, hence representing new variants of the well-established E ′ 1 center. Centers E ′ 6 and E ′ 8 have the orientations of the unique principal g and A( 29Si) axes approximately along a long Si-O bond direction, similar to the E ′ 2 centers. Therefore, these new E′ type centers apparently arise from the removal of different oxygen atoms and represent variable local distortions around the oxygen vacancies. © 2011 Springer-Verlag.
Ключевые слова:	quartz; oxygen; orientation; electron spin resonance; crystal chemistry; chemical bonding; annealing; Oxygen vacancies; Silicon; Quartz; Paramagnetism; Human echovirus 1; Oxygen; Electron spin resonance spectroscopy; Radiation induced defects; Oxygen atom; Local distortion; Hyperfine structure; Radiation-induced defects; Quartz; Oxygen vacancies; EPR; E′ centers; Paramagnetic resonance;
Издано:	2012
Физ. характеристика:	с.79-85