1. Effects of Iron Doping on the Physical Properties of Quaternary Ferromagnetic Sulfide: Ba2Fe0.6V1.4S6
- Author
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Xiaofang Lai, Changsheng Song, Kejun Bu, Fuqiang Huang, Sishun Wang, Jijian Xu, Jianqiao He, and Dong Wang
- Subjects
chemistry.chemical_classification ,Sulfide ,Condensed matter physics ,Chemistry ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,Polaron ,01 natural sciences ,Magnetic susceptibility ,Variable-range hopping ,0104 chemical sciences ,Inorganic Chemistry ,Paramagnetism ,Ferromagnetism ,Electrical resistivity and conductivity ,Density of states ,Physical and Theoretical Chemistry ,0210 nano-technology - Abstract
The mixed-metal sulfide compound with the formula Ba2Fe0.6V1.4S6 was successfully synthesized via solid-state reaction. Ba2Fe0.6V1.4S6 has a quasi-one-dimensional structure and crystallizes in the hexagonal space group P63/mmc. The structure is composed of face-sharing anion octahedron [MS6]8– (M = V or Fe) units to construct infinite chains along the c axis, in which the Fe atoms randomly occupy the V sites. The Ba2+ ions reside between adjacent chains. Magnetic susceptibility measurements reveal a transition between paramagnetism and ferromagnetism around 25 K. The small polaron hopping (SPH) conduction behavior has been observed in the higher temperature region (75–300 K), while in the lower temperature region (25–74 K), the resistivity features a variable range hopping mechanism (VRH). The analysis of density of states indicates that Fe-3dz2 and S-3p states mainly dominate the valence band maximum, while Fe-3dz2 states contribute significantly to the magnetic susceptibility.
- Published
- 2017
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