The coordination environment of Ag and Cu in ternary chalcogenide glasses

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An analysis is made of the information provided by the method of isotopic substitution in neutron diffraction on the metal atom coordination environment in M-A-X glasses, where M denotes Ag or Cu, A a Group IVB or VB element, and X a chalcogen. It is found that the M-X coordination number is low (∼ 3-4) but there is no clear correlation between its precise value and whether the material is a semiconductor or fast-ion conductor. When the concentration of M is high it is possible to measure the M-M partial pair distribution function gM-M(r). In those systems for which results are available it is found that, irrespective of the electrical conductivity mechanism, short M-M nearest-neighbour distances are present. However, the first peak in gM-M(r) is more clearly defined in the case of semiconducting glasses.

Original languageEnglish
Pages (from-to)172-175
Number of pages4
JournalJournal of Non-Crystalline Solids
Issue number1
Publication statusPublished - 1 Oct 1996

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Condensed Matter Physics
  • Materials Chemistry


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