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Keywords:

  • 61.10.Nz;
  • 61.50.Nw;
  • 61.66.Fn

Abstract

The AgIn5Te8 compound was synthesized by the melt and annealing technique and its structure was refined from X-ray powder diffraction pattern using the Rietveld method. AgIn5Te8 crystallizes in the tetragonal space group Pequation image2m (No 111), Z = 1, with a = 6.1952(2) Å, c = 12.419(4) Å, V = 476.7(2) Å3. The refinement of 23 instrumental and structural parameters led to Rp = 8.2%, Rwp = 11.6%, Rexp = 6.8 % and S = 1.7; RB = 11.2 % for 5501 step intensities and 253 independent reflections. The structure is characterized by a double alternation of selenide–metal planes according to the In2–Te1–In1–Te2–Ag–Te2–In1–Te1–In2 sequence. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)