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XANES and EXAFS at Mo K-edge in (AgI)1− x(Ag2MoO4)xglasses and crystals

Authors
Journal
Solid State Ionics
0167-2738
Publisher
Elsevier
Publication Date
Volume
121
Identifiers
DOI: 10.1016/s0167-2738(98)00546-3
Keywords
  • Exafs
  • Xanes
  • Glasses
  • Molybdates
  • Agi

Abstract

Abstract (AgI) 1− x (Ag 2MoO 4) x glasses and crystals have been studied by X-ray absorption spectroscopy at the Mo K-edge. All the measured samples contain isolated [MoO 4] tetrahedra with R(Mo–O)=1.785±0.008 Å and mean square relative displacement (MSRD) σ 2=0.0043±0.0013 Å 2, which are unchanged upon insertion of AgI. The glasses have a quite similar environment around molybdenum, which resembles that of the crystal (AgI) x (Ag 2MoO 4) x with x=0.33. The presence of AgI modifies the local environment around molybdenum already in the second coordination shell.

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