Field dependence of antiferromagnetic domain switching in epitaxial Fe/CoO/MgO(001) systems

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	Field dependence of antiferromagnetic domain switching in epitaxial Fe/CoO/MgO(001) systems
	Li, Q.; Ma, T. P.; Yang, M.; Sun, L.; Huang, S. Y.; Li, R. W.; Won, C.; Qiu, Z. Q.; Wu, Y. Z.
刊名	PHYSICAL REVIEW B
	2017
卷号	96 期号:2 页码:24420
ISSN号	2469-9950
英文摘要	Utilizing the magneto-optic Kerr effect and Kerr microscopy measurements, we investigated the antiferro-magnetic (AFM) domain switching process at different magnetic fields in a single-crystalline Fe/CoO bilayer grown on MgO(001) substrate. In spite of the zero-net magnetic moment in the CoO layer, we find that the activation energy barrier of CoO AFM domain switching decreased at larger magnetic field. To separate the different behaviors of domain nucleation and domain wall motion during the CoO spin switching process, a new analytical method was developed. Using this method, we found that the CoO domain nucleation energy barrier exhibited a jump at a critical magnetic field while the CoO domain wall motion experienced only a tiny energy barrier variation. The field-dependent behaviors of the energy barriers were attributed to the formation of a spiral domain wall in the Fe layer during its magnetization reversal and this was supported by micromagnetic simulations.
公开日期	2017-12-25
内容类型	期刊论文
源URL	[http://ir.nimte.ac.cn/handle/174433/13730]
专题	2017专题
推荐引用方式 GB/T 7714	Li, Q.,Ma, T. P.,Yang, M.,et al. Field dependence of antiferromagnetic domain switching in epitaxial Fe/CoO/MgO(001) systems[J]. PHYSICAL REVIEW B,2017,96(2):24420.
APA	Li, Q..,Ma, T. P..,Yang, M..,Sun, L..,Huang, S. Y..,...&Wu, Y. Z..(2017).Field dependence of antiferromagnetic domain switching in epitaxial Fe/CoO/MgO(001) systems.PHYSICAL REVIEW B,96(2),24420.
MLA	Li, Q.,et al."Field dependence of antiferromagnetic domain switching in epitaxial Fe/CoO/MgO(001) systems".PHYSICAL REVIEW B 96.2(2017):24420.