Structural refinement of the ternary chalcogenide compound Cu 2 GeTe 3  by X‐ray powder diffraction | Zendy

Delgado Gerzon E. | Zendy; Mora Asiloé J. | Zendy; Pirela María | Zendy; VelásquezVelásquez Ana | Zendy; Villarreal Manuel | Zendy; Fernández Braulio J. | Zendy

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Structural refinement of the ternary chalcogenide compound Cu 2 GeTe 3 by X‐ray powder diffraction

Author(s) -

Delgado Gerzon E.,

Mora Asiloé J.,

Pirela María,

VelásquezVelásquez Ana,

Villarreal Manuel,

Fernández Braulio J.

Publication year - 2004

Publication title -

physica status solidi (a)

Language(s) - English

Resource type - Journals

eISSN - 1521-396X

pISSN - 0031-8965

DOI - 10.1002/pssa.200406850

Subject(s) - isostructural , crystallography , powder diffraction , chalcogenide , rietveld refinement , ternary operation , diffraction , x ray crystallography , materials science , tetrahedron , crystal structure , chemistry , optics , physics , computer science , metallurgy , programming language

The Cu 2 GeTe 3 compound crystallizes in the Imm2 (N° 44) space group, Z = 2, with a = 12.641(1) Å, b = 4.2115(2) Å, c = 5.9261(2) Å, V = 315.49(3) Å 3 . Its structure was refined from X‐ray powder diffraction data using the Rietveld method. The refinement of 23 instrumental and structural variables led to R p = 8.2%, R wp = 11.6%, R exp = 6.8%, R B = 11.2 % and S = 1.7, for 5501 step intensities and 253 independent reflections. This compound is isostructural with Cu 2 GeSe 3 , and consists of a three‐dimensional arrangement of slightly distorted CuTe 4 and GeTe 4 tetrahedra connected by common corners. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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