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- W3085386097 abstract "The synthesis, structural characterization, and magnetic properties of La3Mn2NbO9 double perovskite are reported. The crystal structure has been refined by X-ray and neutron powder diffraction data in the monoclinic space group P21/n. The Mn2+, Mn3+ and Nb5+ cations are distributed at the 2d and 2c Wyckoff sites, with a high cation order degree in the latter, mainly occupied by Mn2+/Mn3+. The Mn3+ presence was established from X-ray Emission Spectroscopy and X-ray Photoelectron Spectroscopy. Rietveld refinements of powder neutron diffraction data show that at room temperature the cell parameters are a= 5.6063(3) Å, b= 5.8155(3) Å, c= 7.9877(2) Å y β= 89.89(1)°. Magnetization measurements indicate the presence of ferromagnetic and antiferromagnetic interactions with TC ∼19 K and TN ∼11 K, respectively, with a magnetic cell of symmetry Γ1(Ag). The analysis of the neutron data suggests a canted ferrimagnetic spin structure where an antiferromagnetic unit-cell in a and c axis, and ferromagnetic in b axis with a propagation vector k= (0 ½ 0) was used. The effective magnetic moment obtained experimentally is μeff= 5.50 μB/mol Mn2+/3+, slightly lower than the theoretical one for spin only (5.83 μB)." @default.
- W3085386097 created "2020-09-21" @default.
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- W3085386097 date "2021-02-01" @default.
- W3085386097 modified "2023-10-18" @default.
- W3085386097 title "Canted ferrimagnetism in the distorted double perovskite La3Mn2NbO9" @default.
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- W3085386097 doi "https://doi.org/10.1016/j.jallcom.2020.157018" @default.
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