Abstract—
We report the preparation of SmS@Y2O2S and Y2O2S@SmS ceramics with a core–shell nanostructure via 1123-K sulfidation of rare-earth oxides prepared by the sol–gel method, involving precipitation from starting metal nitrate solutions with NH4OH as a precipitant, followed by annealing of the resultant sulfide phases in an induction furnace at 1473 K. Using X-ray diffraction and scanning electron microscopy data, we have evaluated the average crystallite size in the materials and examined the morphology of the constituent phases in them. In addition, the short-range order in the coexisting nanostructures has been analyzed in detail using Raman spectroscopy and X-ray photoelectron spectroscopy data.
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ACKNOWLEDGMENTS
We are grateful to T.D. Pivovarova for her assistance in the synthesis of samarium and yttrium hydroxides and to B.A. Kolesov for his assistance in interpreting the results.
Funding
This work was supported by the Russian Federation President’s Grants Council, research project no. MK-3688.2021.1.3.
We gratefully acknowledge the support from the Russian Federation Ministry of Science and Higher Education, project no. 121031700315-2.
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Sotnikov, A.V., Bakovets, V.V., Syrokvashin, M.M. et al. Distribution of Phases and Short-Range Order Distortion in SmS@Y2O2S and Y2O2S@SmS Core–Shell Nanostructures. Inorg Mater 58, 1105–1113 (2022). https://doi.org/10.1134/S0020168522100132
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DOI: https://doi.org/10.1134/S0020168522100132