Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks

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	Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks
	Dai, Z. M.; Dai, Y. Y.; Liu, W.; Wang, T. T.; Zhao, X. T.; Zhao, X. G.; Zhang, Z. D.; Liu, W (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Liu, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
	2017-07-10
发表期刊	APPLIED PHYSICS LETTERS
ISSN	0003-6951
卷号	111 期号:2 页码:-
摘要	Magnetic vortices in patterned nanocomposite structures have been studied. A double-vortex structure consisting of two vortex cores with opposite chiralities and two edge half-vortices is realized in a micron-size circular disk, which consists of [Co/Pd](7)/Ru/Py. A systemic study of the magnetization reversal of a double-vortex state and a single vortex state in an out-of-plane applied field has been performed by means of magnetic force microscopy. It is found that the interlayer exchange and dipolar interactions are critical for nucleation and annihilation of the double-vortex and the single vortex states. Micromagnetic simulations prove that the double-vortex state can stably exist in a patterned nanocomposite structure. Magnetic configurations ranging from the double-vortex and single vortex states to other multidomain states and the in-plane single-domain state are observed. The dependence of the magnetic configuration on the thickness of the soft-magnetic layer and spacer layer is presented in an experimental phase diagram. The results can significantly widen the practical applications of vortices on the three-dimensional spintronic memory and logic devices. Published by AIP Publishing.; Magnetic vortices in patterned nanocomposite structures have been studied. A double-vortex structure consisting of two vortex cores with opposite chiralities and two edge half-vortices is realized in a micron-size circular disk, which consists of [Co/Pd](7)/Ru/Py. A systemic study of the magnetization reversal of a double-vortex state and a single vortex state in an out-of-plane applied field has been performed by means of magnetic force microscopy. It is found that the interlayer exchange and dipolar interactions are critical for nucleation and annihilation of the double-vortex and the single vortex states. Micromagnetic simulations prove that the double-vortex state can stably exist in a patterned nanocomposite structure. Magnetic configurations ranging from the double-vortex and single vortex states to other multidomain states and the in-plane single-domain state are observed. The dependence of the magnetic configuration on the thickness of the soft-magnetic layer and spacer layer is presented in an experimental phase diagram. The results can significantly widen the practical applications of vortices on the three-dimensional spintronic memory and logic devices. Published by AIP Publishing.
部门归属	[dai, z. m. ; dai, y. y. ; liu, w. ; wang, t. t. ; zhao, x. t. ; zhao, x. g. ; zhang, z. d.] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [liu, w.] chinese acad sci, inst met res, shenyang 110016, peoples r china
学科领域	Physics, Applied
资助者	National Nature Science Foundation of China [51590883, 51331006, 51471167]; National Basic Research Program of China [2017YFA0206302]; Chinese Academy of Sciences [KJZD-EW-M05-3]
收录类别	SCI
语种	英语
WOS记录号	WOS:000405661700026
引用统计	被引频次：8[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78050
专题	中国科学院金属研究所
通讯作者	Liu, W (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.; Liu, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Dai, Z. M.,Dai, Y. Y.,Liu, W.,et al. Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks[J]. APPLIED PHYSICS LETTERS,2017,111(2):-.
APA	Dai, Z. M..,Dai, Y. Y..,Liu, W..,Wang, T. T..,Zhao, X. T..,...&Liu, W .(2017).Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks.APPLIED PHYSICS LETTERS,111(2),-.
MLA	Dai, Z. M.,et al."Magnetization reversal of vortex states driven by out-of-plane field in the nanocomposite Co/Pd/Ru/Py disks".APPLIED PHYSICS LETTERS 111.2(2017):-.