Fabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4

Peng Li, Chuan Xia, Qiang Zhang, Zaibing Guo, Wenyao Cui, Haili Bai, Husam N. Alshareef, Xixiang Zhang

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High-purity, well-crystallized spinel Fe3S4 nanoplatelets were synthesized by the hydrothermal method, and the saturation magnetic moment of Fe3S4 was measured at 1.83 μB/f.u. The temperature-dependent resistivity of Fe3S4 was metallic-like for T < 180 K: room-temperature resistivity was measured at 7.711 × 103 μΩ cm. The anomalous Hall conductivity of Fe3S4 decreased with increasing longitudinal conductivity, in sharp contrast with the accepted theory of the anomalous Hall effect in a dirty-metal regime. Furthermore, negligible spin-dependent magnetoresistance was observed. Band structure calculations confirmed our experimental observations that Fe3S4 is a metal and not a half metal as expected.
Original languageEnglish (US)
Pages (from-to)223903
JournalJournal of Applied Physics
Issue number22
StatePublished - Jun 10 2015

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