Abstract
X-ray powder diffraction, X-ray photoelectron, and Mössbauer spectroscopy are used to study the ionic and phase compositions of samples of powdered ferrogarnet Y2.5Ce0.5Fe2.5Ga2.5O12 obtained by gel combustion followed by crystallization in vacuum and additional annealing in air at 750°С. According to X-ray photoelectron and Mössbauer spectroscopy data, the iron and cerium cations in the homogeneous ferrogarnet structure are stabilized in the formal oxidation state Fe3+. At the same time, along with Ce3+, the surface of Y2.5Ce0.5Fe2.5Ga2.5O12 particles contains Ce4+ ions. The results obtained can be used to create functional materials for a new generation of magnetooptical devices.
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Funding
The study was supported by the Russian Science Foundation, grant no. 23-43-10004. The studies were carried out using the equipment of the Center for Collective Use of the Physical Methods of Investigation of the Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences and equipment purchased at the expense of the Development Program of the Moscow State University.
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Teterin, Y.A., Smirnova, M.N., Maslakov, K.I. et al. Synthesis, Ionic, and Phase Compositions of Ferrogarnet Y2.5Ce0.5Fe2.5Ga2.5O12. Russ. J. Inorg. Chem. 68, 829–837 (2023). https://doi.org/10.1134/S0036023623600831
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DOI: https://doi.org/10.1134/S0036023623600831