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Local atomic order in As34Se51Ag15 and As34Se51I15 glasses

I. KABAN1,* , W. HOYER1, T. PETKOVA2, P. PETKOV3, B. BEUNEU4, A. SCHÖPS5, M. A. WEBB5

Affiliation

  1. Institute of Physics, Chemnitz University of Technology, D-09107 Chemnitz, Germany
  2. Institute of Electrochemistry and Energy Systems, G. Bonchev Str. Bl.10, 1113 Sofia, Bulgaria
  3. University of Chemical Technology and Metallurgy, Department of Physics, 8Kl Ohridsky Blvd., 1756 Sofia, Bulgaria
  4. Laboratoire Léon Brillouin CEA-SACLAY, 91191 Gif sur Yvette, Cedex, France
  5. Hamburger Synchrotronstrahlungslabor HASYLAB am Deutschen Elektronen-Synchrotron DESY Notkestrasse 85, D-22603 Hamburg, Germany

Abstract

As34Se51Ag15 and As34Se51I15 glasses have been studied with high energy X-ray diffraction, neutron diffraction and extended X-ray absorption spectroscopy at various edges. The experimental data have been modelled simultaneously with the reverse Monte Carlo simulation method. Combination of the three independent measurements allowed the separation of the partial pair correlation functions and estimation of the corresponding coordination numbers. Structure modifications induced by different doping elements are established..

Keywords

Glassy chalcogenides, Atomic structure, Modelling, As-Se-Ag, As-Se-I.

Submitted at: Aug. 25, 2007
Accepted at: Sept. 18, 2007

Citation

I. KABAN, W. HOYER, T. PETKOVA, P. PETKOV, B. BEUNEU, A. SCHÖPS, M. A. WEBB, Local atomic order in As34Se51Ag15 and As34Se51I15 glasses, Journal of Optoelectronics and Advanced Materials Vol. 9, Iss. 9, pp. 2750-2753 (2007)