Abstract

DELGADO-NINO, P.; CHACON, C.  and  DELGADO, G.E.. A new ordered vacancy compound; preparation and crystal structure of Ag₃In₅□Te₉. Rev. mex. fis. [online]. 2019, vol.65, n.5, pp.475-478.  Epub Apr 23, 2020. ISSN 0035-001X.  https://doi.org/10.31349/revmexfis.65.475.

The new ordered vacancy compound Ag3In5□Te9 was synthesized by the melt and annealing technique and its structure was refined from X-ray powder diffraction pattern using the Rietveld method. The title compound crystallizes in the tetragonal space group P$\stackrel{-}{4}$2c(N ° 112), with a = 6.3453(2) Å, c = 12.5754(7) Å, V = 506.32(4) Å 3. The refinement of 23 instrumental and structural parameters led to Rp = 5.4%, Rwp = 5.8%, Rexp = 5.1%, S = 1.1. This ternary compound is isostructural with Cu3In5□Te9 and have a defect adamantane structure.

Keywords : Ordered vacancy compound; crystal structure; X-ray powder diffraction; Rietveld refinement; AgInTe₂; 61.05.cp; 61.50.Nw; 61.66.Fn; 61.40.b.

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