Magnetic Properties of a Layered Cobaltite Sr1–xYxCoO3–δ (x = 0.1)

Structural, magnetic, electronic, and dilatation properties of the ordered solid solutions Ln0.2Sr0.8CoO3-δ (Ln = Sm, Gd, Dy) with the same oxygen nonstoichiometry index δ

“…It should be noted that X-ray diffraction analysis in the low-angle region did not show the presence of the broadened superstructure reflection observed in the Sr 0.9 Y 0.1 CoO 3−γ compounds [10] and the associated existence of a monoclinically distorted phase described in terms of the superstructure inherent in the A2/m space group. We also did not observe the orthorhombic superstructure (Cmma; ) given in [26] for the Dy 0.2 Sr 0.8 CoO 2.71 composition, which is most likely to be associated with different oxygen nonstoichiometry of the samples.…”

“…The generation conditions of substituted single-phase rare-earth cobaltites Ln 1-x Sr x CoO 3-δ (Ln = La 3+ -Yb 3+ , Y) were determined by comprehensive analysis using electron, X-ray, and neutron diffraction. The type of cation and the value of oxygen nonstoichiometry were found to lead to the formation of a complex of superstructures (tetragonal, orthorhombic, monoclinic) with various properties [7][8][9][10]. For the elements with smaller radius than that of Nd 3+ , there are some disordered perovskites at high temperatures, however, a structure with an ordered arrangement of the Sr 2+ , Ln 3+ cations and anionic vacancies at low temperatures is stable [7,8,11].…”