PUB-2015-FAC

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, Xi-xiang Zhang, "Fabrication and characterization of nanostructured Fe3S4, an isostructural compound of half-metallic Fe3O4"
​J. Appl. Phys. 117, 223903 (2015)​
Peng Li, Chuan Xia, Qiang Zhang, Zaibing Guo, Wenyao Cui, Haili Bai, Husam N Alshareef, Xi-xiang Zhang
Fe3S4, half-metal
2015
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-temperatureresistivity was measured at 7.711 × 103  μΩ cm. The anomalous Hall conductivity of Fe3S4decreased with increasing longitudinal conductivity, in sharp contrast with the accepted theoryof the anomalous Hall effect in a dirty-metal regime. Furthermore, negligible spin-dependentmagnetoresistance was observed. Band structure calculations confirmed our experimental observations that Fe3S4 is a metal and not a half metal as expected.