Fabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4
Alshareef, Husam N.
KAUST DepartmentAdvanced Nanofabrication and Thin Film Core Lab
Physical Sciences and Engineering (PSE) Division
Materials Science and Engineering Program
Advanced Nanofabrication, Imaging and Characterization Core Lab
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AbstractHigh-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.
CitationFabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4 2015, 117 (22):223903 Journal of Applied Physics
JournalJournal of Applied Physics