Year: 2020
Type: article
Abstract: The crystal structures of the new quaternary compounds AgGa2Se3Cl and AgGa2Te3Cl have been studied by X-ray powder diffraction.An analysis of the diffraction diagrams indicated the tetragonal crystal system, structure type CuIn2Te3Cl (space group I-4) with the following unit-cell parameters: AgGa2Se3Cl, a = 0.59789(3) nm, c = 1.08592(7) nm; AgGa2Te3Cl, a = 0.63044(4) nm, c = 1.19562(8) nm.The Ga sites have tetrahedral surrounding and their positions (Wyckoff positions 2a and 2c) are filled to 80 %.The statistic mixtures M1, M2 (composition: 50 % Ag, 20 % Ga, 30 % vacancies) occupy two Wyckoff positions (2b and 2d) and center tetrahedra [M14Х] and [M24Х], where X = 75 % Se(Te), 25 % Cl.Crystal structure / chalcogenides / X-ray powder diffraction
Source: Chemistry of Metals and Alloys
DOI: 10.30970/cma13.0399
Authors: Valentyna KOZAK, Inna IVASHCHENKO, Lubomyr GULAY, Ivan OLEKSEYUK
Institution: Lesya Ukrainka Volyn National University
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W7103999839