Domain Wall Propagation Tuning In Magnetic Nanowires Through Geometric Modulation

dc.creatorArzuza
dc.creatorL. C. C.; Lopez-Ruiz
dc.creatorR.; Salazar-Aravena
dc.creatorD.; Knobel
dc.creatorM.; Beron
dc.creatorF.; Pirota
dc.creatorK. R.
dc.date2017
dc.datejun
dc.date2017-11-13T13:56:29Z
dc.date2017-11-13T13:56:29Z
dc.date.accessioned2018-03-29T06:09:49Z
dc.date.available2018-03-29T06:09:49Z
dc.identifierJournal Of Magnetism And Magnetic Materials. Elsevier Science Bv, v. 432, p. 309 - 317, 2017.
dc.identifier0304-8853
dc.identifier1873-4766
dc.identifierWOS:000399601600046
dc.identifier10.1016/j.jmmm.2017.01.071
dc.identifierhttp://www-sciencedirect-com.ez88.periodicos.capes.gov.br/science/article/pii/S0304885316322648?via%3Dihub
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/329866
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1366891
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.descriptionThe magnetic behavior of nickel modulated nanowires embedded in porous alumina membranes is investigated. Their diameters exhibit a sharp transition between below (35 nm) and above (52 nm) the theoretical limit for transverse and vortex domain walls. Magnetic hysteresis loops and first-order reversal curves (FORCs) were measured on several ordered nanowire arrays with different wide-narrow segment lengths ratio and compared with those from homogenous nanowires. The experimental magnetic response evidences a rather complex susceptibility behavior for nanowires with modulated diameter. Micromagnetic simulations on isolated and first-neighbors arrays of nanowires show that the domain wall structure, which depends on the segment diameter, suffers a transformation while crossing the diameter modulation, but without any pinning. The experimental array magnetic behavior can be ascribed to a heterogeneous stray field induced by the diameter modulation, yielding a stronger interaction field at the wide extremity than at the narrow one. The results evidence the possibility to control the domain wall propagation and morphology by modulating the lateral aspect of the magnetic entity. (C) 2017 Elsevier B.V. All rights reserved.
dc.description432
dc.description309
dc.description317
dc.descriptionFAPESP
dc.descriptionCNPq
dc.descriptionCAPES
dc.descriptionChilean CONICYT
dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.descriptionConselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
dc.descriptionCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.languageEnglish
dc.publisherElsevier Science BV
dc.publisherAmsterdam
dc.relationJournal of Magnetism and Magnetic Materials
dc.rightsfechado
dc.sourceWOS
dc.subjectMagnetostatic Interactions;vortex-core;arrays;reversal;alumina;field;electrodeposition;microwires;ni
dc.titleDomain Wall Propagation Tuning In Magnetic Nanowires Through Geometric Modulation
dc.typeArtículos de revistas


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