Preparation, differential thermal analysis and crystal structure of the new quaternary compound CuVInSe3
Document title: Preparation, differential thermal analysis and crystal structure of the new quaternary compound CuVInSe3
Journal: Revista mexicana de física
Database: PERIÓDICA
System number: 000460952
ISSN: 0035-001X
Authors: 1
2
2
2
Institutions: 1Instituto Politécnico Nacional, Escuela Superior de Ingeniería Química e Industrias Extractivas, Ciudad de México. México
2Universidad de Los Andes, Facultad de Ciencias, Mérida. Venezuela
Year:
Season: Nov-Dic
Volumen: 64
Number: 6
Pages: 548-552
Country: México
Language: Inglés
Document type: Artículo
Approach: Analítico, teórico
English abstract 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
Disciplines: Física y astronomía
Keyword: Fisicoquímica y química teórica,
Síntesis química,
Difracción de rayos X en polvo,
Estructura cristalina,
Calcogenuro,
Semiconductores
Keyword: Physical and theoretical chemistry,
Chemical synthesis,
X-ray powder diffraction,
Crystal structure,
Differential thermal analysis,
Chalcogenide,
Semiconductors
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