Preparation, differential thermal analysis and crystal structure of the new quaternary compound CuVInSe3

• Gustavo Marroquín ^[1] ; Gerzon E. Delgado ^[2]
  1. [1] Instituto Politécnico Nacional

     Instituto Politécnico Nacional

     México

     
  2. [2] Universidad de Los Andes (Venezuela)

     Universidad de Los Andes (Venezuela)

     Venezuela

     
• Localización: Revista Mexicana de Física, ISSN-e 0035-001X, Vol. 64, Nº. 6, 2018, págs. 548-552
• Idioma: inglés
• Enlaces
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• Resumen

  • The crystal structure of the quaternary compound CuVInSe_(3), belonging to the system (CuInSe2)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¯42c (N◦ 112), with unit cell parameters a = 5.7909(4) Å, c = 11.625(1) A, ˚ V = 389.84(5) A˚ 3 . The Rietveld refinement of 25 instrumental and structural variables led to Rexp = 6.6%, Rp = 8.7 %, Rwp = 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 CuFeInSe3. The DTA indicates that this compound melts at 1332 K.