Orbital - Vol. 13 No. 4 - July-September 2021
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The Crystal Structure of the New Layered Alloy (CuGa)0.52TaSe2 Studied by SEM, DTA, and XRPD

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  • Gerzon E. Delgado,
  • Sonia Durán,
  • Jennifer A. Aitken,
  • Marcos Muñoz,
  • Pedro Grima-Gallardo
Gerzon E. Delgado
Facultad de Ciencias, Universidad de Los Andes, Mérida
Sonia Durán
Universidad Centro-Occidental “Lisandro Alvarado”
Jennifer A. Aitken
Department of Chemistry and Biochemistry, Duquesne University, Pittsburgh
Marcos Muñoz
Universidad Centro-Occidental “Lisandro Alvarado”
Pedro Grima-Gallardo
1. Centro de Estudios en Semiconductores, Departamento de Física, Facultad de Ciencias, Universidad de Los Andes, Mérida 2. Centro Nacional de Tecnologías Ópticas (CNTO), Mérida 3. Centro de Investigaciones de Astronomía (CIDA), Mérida
Published October 5, 2021
Keywords
  • Mo-S2 type; alloys; crystal structure; X-ray powder diffraction
How to Cite
(1)
Delgado, G. E.; Durán, S.; Aitken, J. A.; Muñoz, M.; Grima-Gallardo, P. The Crystal Structure of the New Layered Alloy (CuGa)0.52TaSe2 Studied by SEM, DTA, and XRPD. Orbital: Electron. J. Chem. 2021, 13, 286-290.

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Abstract

The new (CuGa)0.52TaSe2 alloy was synthesized by the melt and annealing technique and studied by SEM, DTA, and XRPD techniques. Its structure has been refined by the Rietveld method using X-ray powder diffraction data. This compound crystallizes in the hexagonal space group P-6m2 (Nº 187) with unit cell parameters a = 3.648(2) Å, c = 13.568(4) Å, V = 156.4(1) Å3, Z = 2. The crystal structure is based on the MoS2-type of stacking of TaSe2 layers with a partial ordering of Cu and Ga cations over the tetrahedral sites. The powder pattern was composed of 63.9% of the principal phase (CuGa)0.52TaSe2 and 26.3% of CuGaSe2, 9.8% of TaSe3, as the secondary phases.

DOI: http://dx.doi.org/10.17807/orbital.v13i4.1559

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