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Topological Hall effect in frustrated B2-ordered Mn0.74 Co0.57 Al0.69 films

Exploring materials with topological magnetic structures has always been the subject of intense research due to fundamental and technological interests. Here we report the topological Hall effect in the frustrated B2-ordered Mn0.74 Co0.57 Al0.69 thin films. A large topological Hall resistivity of 58...

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Published in:Physical review. B 2021-08, Vol.104 (6)
Main Authors: Chen, Peng, Zhang, Chunlei, Wang, Yongzuo, Lv, Bing, Liu, Pei, Tian, Yinhua, Ran, Jiaqi, Gao, Cunxu, Liu, Qingfang, Xue, Desheng
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container_title Physical review. B
container_volume 104
creator Chen, Peng
Zhang, Chunlei
Wang, Yongzuo
Lv, Bing
Liu, Pei
Tian, Yinhua
Ran, Jiaqi
Gao, Cunxu
Liu, Qingfang
Xue, Desheng
description Exploring materials with topological magnetic structures has always been the subject of intense research due to fundamental and technological interests. Here we report the topological Hall effect in the frustrated B2-ordered Mn0.74 Co0.57 Al0.69 thin films. A large topological Hall resistivity of 58.3 n Ω cm is found at 300 K. It is shown that a spin reorientation transition occurs around 200 K through the temperature-dependent magnetization and angular-dependent ferromagnetic resonance measurements. Using the obtained magnetic anisotropy parameters, we perform the micromagnetic simulations to simulate the formation and evolution of topological magnetic structures with temperature, demonstrating the influence of the higher-order magnetic anisotropies. This work enriches the variety of materials exhibiting topological Hall effect and helps to clarify the mechanism of new emergent topological features in magnetic materials.
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subjects Electromagnetism
Ferromagnetic resonance
Ferromagnetism
Hall effect
Magnetic anisotropy
Magnetic materials
Magnetism
Temperature dependence
Thin films
Topology
title Topological Hall effect in frustrated B2-ordered Mn0.74 Co0.57 Al0.69 films
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