DataVXChalcogenide LettersPaper
journal article·2020-08Open access

RAMAN CHARACTERIZATION OF CuIrSnX4 NORMAL-SPINEL SYSTEMS

Basic Science Faculty, Catholic University of Maule, San Miguel 3605, Talca 3480112, Chile, P. BARAHONA, A. GALDÁMEZ, Department of Chemistry, Science Faculty, University of Chile, Las Palmeras 3425, Santiago, 7800003, Chile, P. VALENCIA-GALVEZ, Department of Chemistry, Science Faculty, University of Chile, Las Palmeras 3425, Santiago, 7800003, Chile, S. MORIS, Center of advanced investigation studies of Maule (CIEAM), Vice-rectory of research and postgraduate, Catholic University of Maule, San Miguel 3605, Talca 3480112, Chile

Chalcogenide Letters· Volume 17· Issue 8
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Source abstract

Abstract

CuIrSnS4, CuIrSnSe4 and CuIrSnS2Se2 were synthetized by a solid-state reaction at 700 °C. Powder X-ray diffraction patterns were consistent with normal spinel-type structure. Scanning electron microscopy (SEM-EDS) images showed a uniform distribution of CuIr-Sn-S and Se atoms in the samples. Raman scattering analysis revealed A1g, Eg, and three F2g vibrational modes in spectra (cubic Fd3m space-group). Signal at ~320 cm-1 corresponded to the A1g mode, while the band at  230 cm-1 was assigned to the F2g(2) mode due to the asymmetric stretching of the Cu-X bond. Raman spectra were compared with those of the previously published thio- and selenospinels.
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Research context

OpenAlex topics: Chalcogenide Semiconductor Thin Films · Rare-earth and actinide compounds · Advanced Condensed Matter Physics

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