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- W1982928762 abstract "In this paper we report results of structural, spectroscopic, and magnetic investigations of MgFe2O4 nanoparticles prepared by soft mechanochemical synthesis. MgFe2O4 nanoparticles crystallize in Fd3¯m space group with mixed cation distribution and reduced percentage of Fe3+ at tetrahedral (8a) sites. Discrepancy in the cation distribution compared to that in the bulk Mg–ferrite is one of the highest known. X-ray line broadening analysis reveals crystallite size and strain anisotropy. The saturation magnetization, Msat=62 emu/g measured at 5 K is twice higher than that found in the bulk counterparts. Such high value of Msat is attributed to the low value of cation inversion parameter (δ=0.69), to the core/shell structure of the nanoparticles and to the surface/volume ratio. Mössbauer spectrum collected at room temperature reveals ferrimagnetic ordering between Fe3+ ions in 8a and 16d sites, while zero-field-cooled (ZFC) and field-cooled (FC) M(T) measurements were shown superparamagnetic state above 350 K." @default.
- W1982928762 created "2016-06-24" @default.
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- W1982928762 date "2010-02-15" @default.
- W1982928762 modified "2023-10-02" @default.
- W1982928762 title "Magnetization enhancement in nanostructured random type MgFe2O4 spinel prepared by soft mechanochemical route" @default.
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- W1982928762 doi "https://doi.org/10.1063/1.3319563" @default.
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