Abstract
Nanopowders of two crystalline phases, magnesium–aluminum spinel (98 wt %), and cuprite (2 wt %) have been obtained by laser evaporation of a solid target, which is a mechanical mixture of simple oxides (MgO, Al2O3, CuO). These nanopowders have been used to prepare test samples of transparent Cu:MgAl2O4 ceramics, the IR transmission spectra of which revealed two new strong absorption bands at λ1 ≈ 1.55 (1.45) μm and λ2 ≈ 3.45 (3.03) μm, corresponding to transitions between the Stark levels 2E(\({\text{t}}_{2}^{6}\)e3) and 2T2 (\({\text{t}}_{2}^{5}\)e4) of Cu2+ ions in octahedral and tetrahedral positions, respectively.
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The work was carried out within the framework of the Russian Foundation for Basic Research (project no. 20-08-00054) and in the framework of the state budget of the Institute of Electrophysics of the Ural Branch of the Russian Academy of Sciences.
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Osipov, V.V., Solomonov, V.I., Podkin, A.V. et al. Synthesis and Investigation of Magnesium–Aluminum Nanopowders and Ceramics Activated by Copper. Tech. Phys. 66, 149–154 (2021). https://doi.org/10.1134/S1063784221010151
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DOI: https://doi.org/10.1134/S1063784221010151