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Revista mexicana de física

versão impressa ISSN 0035-001X


MARROQUIN, Gustavo; DELGADO, Gerzon E.; GRIMA-GALLARDO, Pedro  e  QUINTERO, Miguel. Preparation, differential thermal analysis and crystal structure of the new quaternary compound CuVInSe3. Rev. mex. fis. [online]. 2018, vol.64, n.6, pp.548-552.  Epub 05-Nov-2019. ISSN 0035-001X.

The crystal structure of the quaternary compound CuVInSe 3, belonging to the system (CuInSe 2) 1 - x(VSe) x with x = 1 / 2, was analyzed using X-ray powder diffraction data. This material was synthesized by the melt and anneal method and crystallizes in the tetragonal space group P 4 ¯2c (N 112), with unit cell parameters a = 5.7909 ( 4 ) Å, c = 11.625 ( 1 ) Å, V = 389.84 ( 5 ) Å 3. The Rietveld refinement of 25 instrumental and structural variables led to R exp = 6.6%, R p = 8.7 %, R w p = 8.8 % and S = 1.3 for 4501 step intensities, and 153 independent reflections. This compound has a normal adamantane structure and is isostructural with CuFeInSe 3. The DTA indicates that this compound melts at 1332 K.

Palavras-chave : Chemical synthesis; X-ray powder diffraction; crystal structure; differential thermal analysis; chalcogenide; semiconductor; 61.05.cp; 61.50.Nw; 61.66.Fn; 61.40.b.

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