Silver environment and covalent network rearrangement in GeS3-Ag glasses

L. Rátkai, I. Kaban, T. Wágner, J. Kolář, S. Valková, Iva Voleská, B. Beuneu, P. Jóvári

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The structure of Ag-doped GeS3 glasses (0, 15, 20, 25 at.% Ag) was investigated by diffraction techniques and extended x-ray absorption fine structure measurements. Structural models were obtained by fitting the experimental datasets simultaneously by the reverse Monte Carlo simulation technique. It is observed that Ge has mostly S neighbours in GeS3, but Ge-Ge bonds appear already at 15% Ag content. Sulfur has ∼2 S/Ge neighbours over the whole concentration range, while the S-Ag coordination number increases with increasing Ag content. Ag-Ag pairs can already be found at 15% Ag. The Ag-S mean coordination number changes from 2.17 ± 0.2 to 2.86 ± 0.2 between 15% and 25% Ag content. Unlike the As-S network in AsS2-25Ag glass, the Ge-S network is not fragmented upon Ag-doping of GeS3 glass.

Original languageEnglish
Article number454210
JournalJournal of Physics Condensed Matter
Issue number45
Publication statusPublished - Nov 13 2013

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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    Rátkai, L., Kaban, I., Wágner, T., Kolář, J., Valková, S., Voleská, I., Beuneu, B., & Jóvári, P. (2013). Silver environment and covalent network rearrangement in GeS3-Ag glasses. Journal of Physics Condensed Matter, 25(45), [454210].