Nano Letters · 2004 · 330 citations · 22 references
Natural SciencesMaterials SciencePhysicsMagnetic MaterialsNanomaterialsNanotechnologyMagnetic NanomaterialsMagnetic OxidesMetal Oxide NanomaterialsNanowiresSpintronic MaterialsSpintronicsAnti-phase BoundariesMagnetic Materials CharacterizationMagnetic NanowiresMagnetiteMagnetoresistanceMaterial Composition AnalysisOxide NanowiresPhase Boundaries
High quality MgO/Fe 3 O 4 core−shell nanowires have been successfully synthesized by depositing an epitaxial shell of Fe 3 O 4 onto single crystal MgO nanowires. The material composition and stoichoimetric ratio have been carefully examined and confirmed with a variety of characterization techniques. These novel structures have rendered unique opportunities to investigate the transport behavior and spintronic property of Fe 3 O 4 in its one-dimensional form. Room-temperature magnetoresistance of ∼1.2% was observed in the as-synthesized nanowires under a magnetic field of B = 1.8 T, which has been attributed to the tunneling of spin-polarized electrons across the anti-phase boundaries.
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New Class of Materials: Half-Metallic Ferromagnets
R. A. de Groot, F. M. Mueller, P.G. van Engen et al. · Physical Review Letters · 1983 · 4.7K citations · Full text