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- W2051443048 abstract "We present magnetic measurements performed on the MnxCo3–xO4 (0 ≤ x ≤ 1) solid solution, prepared by spray pyrolysis. Thin films of about 20 μm thickness were obtained after depositing aqueous metal nitrates precursors on Ti or conducting glass substrates. Powder material scratched from the substrate's surface was used for physico-chemical characterization. Presence of two oxidation states for each metal ion (Mn3+–Mn4+; Co2+–Co3+) triggers specific conduction mechanisms and double-exchange magnetic interactions. The ferromagnetic components are enhanced when x(Mn) increases, in detriment of the antiferromagnetic interactions. The ordering temperature Tc changes with x (from 22 K up to room temperature, for x = 0 up to x = 1). Based in the paramagnetic moment μeff obtained at T > Tc, we propose a cationic distribution which can be nicely compared to the one obtained from crystallographic analyses. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
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- W2051443048 date "2004-07-01" @default.
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- W2051443048 title "Thin films of Co3O4, MnCo2O4 and their solid solution as electrocatalyst: study of their magnetic properties" @default.
- W2051443048 doi "https://doi.org/10.1002/pssc.200304888" @default.
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