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- W1570953317 abstract "The spin polarization is a key quantity for spintronics. Spinel-type multiple oxides such as Fe 3 O 4 or CoFe 2 O 4 , are commonly used in the spintronic devices to generate highly spin-polarized electrons, either for spin injection into semiconductors or for magnetoresistive effects. The inverse spinel structure is a cubic crystal system, with oxide anions arranged in a cubic close-packed lattice and metal cations tetragonally or octahedrally surrounded by the oxygen. For Fe 3 O 4 and CoFe 2 O 4 , Fe3+ ions occupy the tetrahedral sites and half of the octahedral sites, whereas Fe2+ and Co2+ ions are located at the remaining octahedral sites. Because of the different cations at the remaining octahedral sites, Fe 3 O 4 and CoFe 2 O 4 exhibit series of cation-specific properties, such as Fe 3 O 4 is a half-metal semiconductor while CoFe 2 O 4 is an insulator at room temperature. In our previous studies on multiferroic composite Fe 3 O 4 /BiFeO3 [1, 2], we found that the cations at the interface strongly influence the magnetoelectric of the multiferroic composites. Previous studies always characterized the magnetic properties of Co x Fe 3−x O 4 spinels [3, 4]. To date, only a limited number of papers have reported the electrical transport properties of Co x Fe 3−x O 4 . However, a fundamental understanding of the microstructure, magnetic and electrical transport properties of the Co x Fe 3−x O 4 is crucial. The purpose of the present study is to give a systematic investigation of the cation-specific properties of the Co x Fe 3−x O spinel." @default.
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- W1570953317 date "2015-05-01" @default.
- W1570953317 modified "2023-09-24" @default.
- W1570953317 title "Cation effect on the magnetic and magnetotransport properties of Co<inf>x</inf>Fe<inf>3−x</inf>O<inf>4</inf> films: An experimental and first-principles study" @default.
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- W1570953317 doi "https://doi.org/10.1109/intmag.2015.7156906" @default.
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