Abstract
The crystal and magnetic structures of a solid solution of double perovskite Ba2 – x Sr x FeMoO6 (x = 0–1.6) have been investigated by neutron diffraction. The high-resolution diffraction patterns have provided precise information about the changes in the crystal and magnetic structures with an increase in the strontium content and data on the behavior of the sample microstructure. Replacement of barium with strontium leads to a change in the lattice symmetry from cubic (x = 0, sp. gr. Fm3̄m)) to tetragonal (x = 0.4, sp. gr. I4/m). At x = 1.0, the symmetry is either tetragonal (sp. gr. I4/m) or orthorhombic (sp. gr. Fmmm), and at x = 1.6 the symmetry becomes again tetragonal (sp. gr. I4/m). The values of the Curie temperature and microstrain increase with an increase in the strontium content.
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Original Russian Text © V.A. Turchenko, N.A. Kalanda, L.V. Kovalev, V.G. Simkin, A.M. Balagurov, 2017, published in Kristallografiya, 2017, Vol. 62, No. 1, pp. 33–42.
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Turchenko, V.A., Kalanda, N.A., Kovalev, L.V. et al. The influence of the concentration of Sr ions on the crystal and magnetic structures of Ba2 – x Sr x FeMoO6 double perovskites (x = 0–1.6). Crystallogr. Rep. 62, 40–49 (2017). https://doi.org/10.1134/S1063774517010254
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DOI: https://doi.org/10.1134/S1063774517010254