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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
Source PublicationAPPLIED PHYSICS LETTERS
ISSN0003-6951
Volume111Issue:2Pages:-
AbstractMagnetic 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.
description.department[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
Subject AreaPhysics, Applied
Funding OrganizationNational Nature Science Foundation of China [51590883, 51331006, 51471167]; National Basic Research Program of China [2017YFA0206302]; Chinese Academy of Sciences [KJZD-EW-M05-3]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/78050
Collection中国科学院金属研究所
Corresponding AuthorLiu, 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.
Recommended Citation
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):-.
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