Abstract
Complex oxides in the Sm2O3–CaO–MO and Ln2O3–SrO–MO systems (Ln = Sm, Gd; M = Fe, Co) were prepared via the glycerol-nitrate technique at 1100°С in air. The homogeneity ranges for the solid solutions were determined as follows: Sr1 – хGdхCoO3 – δ (0.1 ≤ х ≤ 0.4); Sr2 – yGdyCoO4 – δ (0.8 ≤ y ≤ 1.2); Sr1 – хGdхFeO3 – δ (0.05 ≤ х ≤ 0.30 and 0.80 ≤ х ≤ 1.0); Ca1 – xSmxFeO3 – δ (0.70 ≤ x ≤ 1.0); Sr2 – ySmyFeO4 – δ (0.7 ≤ y ≤ 0.8); Sr2 – yGdyFeO4 – δ (0.75 ≤ y ≤ 0.8); Ca2 – уSmуFeO4 – δ (у = 0.90); Sr3 – zSmzFe2O7 – δ (0 ≤ z ≤ 0.3 and z = 1.8); and Sr3 – zGdzFe2O7 – δ (0 ≤ z ≤ 0.3 and z = 1.9). For all single phase oxides, the crystal structure was determined and the unit cell parameters, the unit cell volume, and the structural parameters were refined.
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This work was supported by the Russian Federation Ministry of Science and Higher Education (state research target, project no. 4.2288.2017/PCh).
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The work was presented at 16th International IUPAC Conference on High Temperature Materials Chemistry (HTMC-XVI), July 2–6, 2018, Yekaterinburg, Russia.
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Khvostova, L.V., Galayda, A.P., Maklakova, A.V. et al. Crystal Structure of Solid Solutions in the Sm 2 O 3 –CaO–MO and Ln 2 O 3 –SrO–MO Systems (Ln = Sm, Gd; M = Fe, Co) . Inorg Mater 55, 1001–1006 (2019). https://doi.org/10.1134/S0020168519080041
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DOI: https://doi.org/10.1134/S0020168519080041