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

• Authors: Olga Bolebrukh , Nikolay Sinyavsky , Irina Korneva , Bernadeta Dobosz , Michal Ostafin , Boleslaw Nogaj , Ryszard Krzyminiewski
• Languages of publication: 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.

Keywords

EN

nuclear quadrupole resonance; disordered solids; semiconductors; electron paramagnetic resonance

• Publisher: De Gruyter Open
• Journal: Open Physics
• Year: 2013
• Volume: 11
• Issue: 12
• Pages: 1686-1693

Dates

published

1 - 12 - 2013

online

20 - 12 - 2013

Contributors

author

Olga Bolebrukh

• Laboratory of Magnetic Resonance, Institute of Physics and Technology, Immanuel Kant Baltic Federal University, A. Nevski 14, 236041, Kaliningrad, Russia

author

Nikolay Sinyavsky

• Division of Physics, Department of Radio Engineering, Baltic State Academy of Fishing Fleet, Molodiozhnaya 6, 236029, Kaliningrad, Russia

author

Irina Korneva

• Division of Physics, Department of Radio Engineering, Baltic State Academy of Fishing Fleet, Molodiozhnaya 6, 236029, Kaliningrad, Russia

author

Bernadeta Dobosz

• Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland

author

Michal Ostafin

• Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland

author

Boleslaw Nogaj

• Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland

author

Ryszard Krzyminiewski

• Division of Medical Physics, Department of Physics, Adam Mickiewicz University in Poznan, Umultowska 85, 61-614, Poznan, Poland

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Identifiers

DOI

10.2478/s11534-013-0329-7