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Atomic- and void-species nanostructures in chalcogenide glasses modified by high-energy -irradiation

T. KAVETSKYY1,2, O. SHPOTYUK1,2,* , I. KABAN3, W. HOYER3

Affiliation

  1. Institute of Materials, Scientific Research Company “Carat”, 202 Stryjska Str., 79031 Lviv, Ukraine
  2. Institute of Physics, Jan Dlugosz University, Al. Armii Krajowej 13/15, Czestochowa 42201, Poland
  3. Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany

Abstract

Atomic- and void-species nanostructures are studied in As2S3 glass in unmodified and -modified states using a combination of conventional X-ray diffraction in respect to the first sharp diffraction peak, synchrotron-based high-energy X-ray diffraction and extended X-ray absorption fine structure spectroscopy. The experimental data are analyzed taking into account radiation-induced changes in the parameters of the first sharp diffraction peak (position, full width at half maximum, intensity), packing factor, structural disordering, atomic and void topology, coordination number and mean square deviation in bond length. The origin of the structural modification effect induced by -irradiation is explained in terms of coordination topological defects model..

Keywords

Chalcogenide glasses, Nanostructure, First sharp diffraction peak, Nanovoids, Radiation modification.

Submitted at: July 3, 2007
Accepted at: Oct. 15, 2007

Citation

T. KAVETSKYY, O. SHPOTYUK, I. KABAN, W. HOYER, Atomic- and void-species nanostructures in chalcogenide glasses modified by high-energy -irradiation, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 10, pp. 3247-3252 (2007)