Magnetic transition behavior and large topological Hall effect in hexagonal Mn2−xFe1+xSn (x = 0.1) magnet

The magnetic transition, transport properties, and magnetic domain structures of the polycrystalline Mn1.9Fe1.1Sn compound with a hexagonal structure have been investigated. The result shows that ferromagnetic and antiferromagnetic phases coexist in this compound. A large topological Hall effect up...

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Bibliographic Details
Published in:Applied physics letters 2020-08, Vol.117 (5)
Main Authors: Liu, Jun, Zuo, Shulan, Zheng, Xinqi, Zhang, Ying, Zhao, Tongyun, Hu, Fengxia, Sun, Jirong, Shen, Baogen
Format: Article
Language:English
Subjects:
Anisotropy
Antiferromagnetism
Applied physics
Domain walls
Electromagnetism
Ferromagnetism
Hall effect
Low temperature
Magnetic domains
Magnetic properties
Magnetic transitions
Magnetism
Topology
Transport properties
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Summary:The magnetic transition, transport properties, and magnetic domain structures of the polycrystalline Mn1.9Fe1.1Sn compound with a hexagonal structure have been investigated. The result shows that ferromagnetic and antiferromagnetic phases coexist in this compound. A large topological Hall effect up to 3.5 μΩ·cm at 50 K has been found due to the formation of noncoplanar spin structures when the competition occurs among magnetocrystalline anisotropy, antiferromagnetic coupling, and ferromagnetic interaction at low temperature. The result of in situ Lorentz transmission electron microscopy cooling experiment at zero field indicates two shapes of domain walls containing vortexes coexisting simultaneously in the compound.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0011570