Venezuela
The crystal structure of the chalcogenide alloys CuZnAlSe_(3), CuZnGaSe_(3) and CuZnInSe_(3), new members of the system I-II-III-VI_(3), were characterized using X-ray powder diffraction data. All materials crystallize in the tetragonal space group P_(4) 2c (Nº 112) with a CuFeInSe_(3)-type structure.
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