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2013 | 11 | 12 | 1686-1693
Article title

Experimental study of the structure of chalcogenide glassy semiconductors in three-component systems of Ge-As-Se and As-Sb-Se by means of NQR and EPR spectroscopy

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EN
Abstracts
EN
The structure of chalcogenide glassy semiconductors in three-component systems of Ge-As-Se and As-Sb-Se has been studied by means of both NQR (nuclear quadrupole resonance) and EPR (electron paramagnetic resonance) spectroscopy. It is investigated that in the glasses of both systems the value of the electric field gradient at the resonating nuclei grows with increasing concentration of the clusters As2Se3 and Sb2Se3, thereby increasing the NQR resonance frequencies. It appears that for the Ge-As-Se system the structural transition from a two-dimensional to three-dimensional structure occurs at average coordination number $\bar r$ = 2.45. The EPR spectral parameters of glasses depend on the composition, the average coordination number and the temperature, and these are discussed. The effect of ”ageing” for CGS (chalcogenide glassy semiconductors) of As-Sb-Se system due to partial crystallization of the sample is observed from the EPR spectra.
Publisher

Journal
Year
Volume
11
Issue
12
Pages
1686-1693
Physical description
Dates
published
1 - 12 - 2013
online
20 - 12 - 2013
Contributors
  • Laboratory of Magnetic Resonance, Institute of Physics and Technology, Immanuel Kant Baltic Federal University, A. Nevski 14, 236041, Kaliningrad, Russia
  • Division of Physics, Department of Radio Engineering, Baltic State Academy of Fishing Fleet, Molodiozhnaya 6, 236029, Kaliningrad, Russia
author
  • Division of Physics, Department of Radio Engineering, Baltic State Academy of Fishing Fleet, Molodiozhnaya 6, 236029, Kaliningrad, Russia, korneva05@rambler.ru
  • Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland
  • Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland
  • Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland
  • Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.-psjd-doi-10_2478_s11534-013-0329-7
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