Fabrication and characterization of nanostructured Fe{sub 3}S{sub 4}, an isostructural compound of half-metallic Fe{sub 3}O{sub 4}
- Division of Physical Science and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955 (Saudi Arabia)
- Advanced Nanofabrication, Imaging and Characterization Core Lab, King Abdullah University of Science and Technology, Thuwal-239955 (Saudi Arabia)
- Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology, Faculty of Science, Institute of Advanced Materials Physics, Tianjin University, Tianjin 300072 (China)
High-purity, well-crystallized spinel Fe{sub 3}S{sub 4} nanoplatelets were synthesized by the hydrothermal method, and the saturation magnetic moment of Fe{sub 3}S{sub 4} was measured at 1.83 μ{sub B}/f.u. The temperature-dependent resistivity of Fe{sub 3}S{sub 4} was metallic-like for T < 180 K: room-temperature resistivity was measured at 7.711 × 10{sup 3 }μΩ cm. The anomalous Hall conductivity of Fe{sub 3}S{sub 4} 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 Fe{sub 3}S{sub 4} is a metal and not a half metal as expected.
- OSTI ID:
- 22412912
- Journal Information:
- Journal of Applied Physics, Vol. 117, Issue 22; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
- Country of Publication:
- United States
- Language:
- English
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