Инд. авторы:	Mashkovtsev R.I., Nepomnyashchikh A.I., Zhaboedov A.P., Paklin A.S.
Заглавие:	Epr study of the e' defects in optical glasses and cristobalite
Библ. ссылка:	Mashkovtsev R.I., Nepomnyashchikh A.I., Zhaboedov A.P., Paklin A.S. Epr study of the e' defects in optical glasses and cristobalite // EPL. - 2021. - Vol.133. - Iss. 1. - ISSN 0295-5075. - EISSN 1286-4854.
Внешние системы:	DOI: 10.1209/0295-5075/133/14003; РИНЦ: 46769214; WoS: 000731461200008;
Реферат:	eng: The electron paramagnetic resonance (EPR) in experimental optical glasses obtained from the East Sayan mountain quartzites has been studied. For comparison a powder sample of cristobalite that formed during the beneficiation process of quartzite was also investigated by EPR. The complex EPR spectra of fast-electron-irradiated glass and cristobalite were treated by computer simulations to determine the types of E' centers and their principal g values. In glasses the well-known paramagnetic centers Eγ', Eα', Eδ' have been observed. In particular, the center Eα'1 previously characterized as stable only below T ~ 200 K was observed as a stable variant at room temperature. In cristobalite the paramagnetic defects similar to the Eγ', Eα'1, Eδ' centers with slightly different g values have been observed. From the observation of analogous E' centers it was inferred that local structures of glass and β-cristobalite are similar.
Ключевые слова:	ESR; DOUBLET; SILICA; CENTERS; E1 CENTER; ALPHA-QUARTZ; OXYGEN VACANCY; PARAMAGNETIC-RESONANCE; ELECTRON-SPIN-RESONANCE; GE;
Издано:	2021
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