Single-crystal neutron diffraction study of the fast-ion conductor β-Ag2S between 186 and 325°C

R. J. Cava, F. Reidinger, B. J. Wuensch

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Abstract

Partial Fourier synthesis of the silver ion density in bcc β-Ag2S at several temperatures reveals cation delocalization in bands along 〈100〉. This density may be analytically represented by use of higher-rank tensors, with partial occupancy of both octahedral and tetrahedral interstices below 200°C, but only tetrahedral occupancy at higher temperatures. R values range from 2.6 to 5.9%. The distribution of mobile ions differs greatly in α-AgI and β-Ag2S, despite similar anion arrays, reflecting the different silver ion concentrations and characteristics of the bonding present in the respective low-temperature phases.

Original languageEnglish (US)
Pages (from-to)69-80
Number of pages12
JournalJournal of Solid State Chemistry
Volume31
Issue number1
DOIs
StatePublished - Jan 1980
Externally publishedYes

All Science Journal Classification (ASJC) codes

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

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