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Magnetization reversal and magnetic interactions in anisotropic Nd-Dy-Fe-Co-B/MgO/alpha-Fe disks and multilayers
Dai, Z. M.; Liu, W.; Zhao, X. T.; Wang, T. T.; Li, S. K.; Yu, Yongsheng; Zhao, X. G.; Zhang, Z. D.; Liu, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.; Yu, YS (reprint author), Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Heilongjiang, Peoples R China.
2017-06-14
Source PublicationNANOSCALE
ISSN2040-3364
Volume9Issue:22Pages:7385-7390
AbstractWe report on a field induced domain evolutionary procedure in the anisotropic Nd-Dy-Fe-Co-B/MgO/Fe multilayers by using firstorder- reversal-curves and magnetic force microscopy. Different reversal behaviors and domain sizes are found in well coupled and decoupled multilayers by changing the thickness of the spacer layer. The competition between dipolar magnetostatic energy and Zeeman energy is evaluated by in-field observation throughout nucleation and annihilation processes. In addition, lithographypatterned arrays of soft Fe disks onto a continuous Nd-Dy-FeCo- B hard-magnetic layer are designed. By decreasing the applied field, it is found that magnetization orientations of the Fe disk and Nd-Dy-Fe-Co-B layer are aligned parallel. In the decoupled disk, although the out-of-plane magnetization orientations are observed, the orientation of the domains in the Fe disk is random. Furthermore, it is found that a stronger anisotropy of the Nd-DyFe- Co-B layer decreases the interaction length. Our results provide a new understanding of anisotropic nanocomposite magnets with long-ranged magnetic interactions.; We report on a field induced domain evolutionary procedure in the anisotropic Nd-Dy-Fe-Co-B/MgO/Fe multilayers by using firstorder- reversal-curves and magnetic force microscopy. Different reversal behaviors and domain sizes are found in well coupled and decoupled multilayers by changing the thickness of the spacer layer. The competition between dipolar magnetostatic energy and Zeeman energy is evaluated by in-field observation throughout nucleation and annihilation processes. In addition, lithographypatterned arrays of soft Fe disks onto a continuous Nd-Dy-FeCo- B hard-magnetic layer are designed. By decreasing the applied field, it is found that magnetization orientations of the Fe disk and Nd-Dy-Fe-Co-B layer are aligned parallel. In the decoupled disk, although the out-of-plane magnetization orientations are observed, the orientation of the domains in the Fe disk is random. Furthermore, it is found that a stronger anisotropy of the Nd-DyFe- Co-B layer decreases the interaction length. Our results provide a new understanding of anisotropic nanocomposite magnets with long-ranged magnetic interactions.
description.department[dai, z. m. ; liu, w. ; zhao, x. t. ; wang, t. t. ; li, s. k. ; zhao, x. g. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [yu, yongsheng] harbin inst technol, sch chem & chem engn, miit key lab crit mat technol new energy convers, harbin 150001, heilongjiang, peoples r china
Subject AreaChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
Funding OrganizationNational Nature Science Foundation of China [51590883, 51471167, 51571072]; 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/321006/78087
Collection中国科学院金属研究所
Corresponding AuthorLiu, W (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.; Yu, YS (reprint author), Harbin Inst Technol, Sch Chem & Chem Engn, MIIT Key Lab Crit Mat Technol New Energy Convers, Harbin 150001, Heilongjiang, Peoples R China.
Recommended Citation
GB/T 7714
Dai, Z. M.,Liu, W.,Zhao, X. T.,et al. Magnetization reversal and magnetic interactions in anisotropic Nd-Dy-Fe-Co-B/MgO/alpha-Fe disks and multilayers[J]. NANOSCALE,2017,9(22):7385-7390.
APA Dai, Z. M..,Liu, W..,Zhao, X. T..,Wang, T. T..,Li, S. K..,...&Yu, YS .(2017).Magnetization reversal and magnetic interactions in anisotropic Nd-Dy-Fe-Co-B/MgO/alpha-Fe disks and multilayers.NANOSCALE,9(22),7385-7390.
MLA Dai, Z. M.,et al."Magnetization reversal and magnetic interactions in anisotropic Nd-Dy-Fe-Co-B/MgO/alpha-Fe disks and multilayers".NANOSCALE 9.22(2017):7385-7390.
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