Abstract
The crystal structure of the quaternary compounds CuFe2AlSe4 and CuFe2GaSe4, belonging to the system I-II2-III-VI4, were characterized using X-ray powder diffraction data. Both compounds crystallize in the tetragonal space group I42m (No. 121), Z=2, with unit cell parameters a = 5.609(1) Å, c = 10.963(2) Å for CuFe2AlSe4 and a = 5.6165(3) Å, c = 11.075(1) Å for CuFe2GaSe4. These compounds are isostructural with CuFe2InSe4, and have a normal adamantane stannite structure.
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Delgado, G. E., Mora, A. J., Grima-Gallardo, P., Muñoz, M., Durán, S., Quintero, M., & Briceño, J. M. (2015). Crystal structure of the quaternary compounds CuFe2AlSe4 and CuFe2GaSe4 from X-ray powder diffraction. Bulletin of Materials Science, 38(4), 1061–1064. https://doi.org/10.1007/s12034-015-0933-9
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