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Article: Unconventional magnetic vortex structures observed in micromagnetic simulations

TitleUnconventional magnetic vortex structures observed in micromagnetic simulations
Authors
KeywordsComplex representation
Magnetic antivortex
Magnetic vortex
Micromagnetic simulation
Alloying elements
Issue Date2008
PublisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jmmm
Citation
Journal of Magnetism and Magnetic Materials, 2008, v. 320 n. 13, p. 1937-1944 How to Cite?
AbstractVery simple complex functions can give good approximate descriptions of two-dimensional magnetic vortex structures. By rotating all the spins of a common vortex by the same angle in the plane, abnormal vortex structures are obtained, which we term unconventional vortex structures. Compared to conventional vortices, unconventional vortices are usually not energetically favorable due to the generation of volume charges. Under certain circumstances, however, unconventional vortices can be formed in order to minimize the total energy of the system. In micromagnetic simulations, unconventional vortex structures are observed in two magnetic systems discussed in the paper: a cylindrical Permalloy disk with thickness much greater than the exchange length; and the crossing region of two perpendicular long, thin-film Permalloy wires. © 2008 Elsevier B.V. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/197922
ISSN
2015 Impact Factor: 2.357
2015 SCImago Journal Rankings: 0.776
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorYan, M-
dc.contributor.authorWang, H-
dc.contributor.authorCampbell, CE-
dc.date.accessioned2014-06-11T08:42:50Z-
dc.date.available2014-06-11T08:42:50Z-
dc.date.issued2008-
dc.identifier.citationJournal of Magnetism and Magnetic Materials, 2008, v. 320 n. 13, p. 1937-1944-
dc.identifier.issn0304-8853-
dc.identifier.urihttp://hdl.handle.net/10722/197922-
dc.description.abstractVery simple complex functions can give good approximate descriptions of two-dimensional magnetic vortex structures. By rotating all the spins of a common vortex by the same angle in the plane, abnormal vortex structures are obtained, which we term unconventional vortex structures. Compared to conventional vortices, unconventional vortices are usually not energetically favorable due to the generation of volume charges. Under certain circumstances, however, unconventional vortices can be formed in order to minimize the total energy of the system. In micromagnetic simulations, unconventional vortex structures are observed in two magnetic systems discussed in the paper: a cylindrical Permalloy disk with thickness much greater than the exchange length; and the crossing region of two perpendicular long, thin-film Permalloy wires. © 2008 Elsevier B.V. All rights reserved.-
dc.languageeng-
dc.publisherElsevier BV. The Journal's web site is located at http://www.elsevier.com/locate/jmmm-
dc.relation.ispartofJournal of Magnetism and Magnetic Materials-
dc.subjectComplex representation-
dc.subjectMagnetic antivortex-
dc.subjectMagnetic vortex-
dc.subjectMicromagnetic simulation-
dc.subjectAlloying elements-
dc.titleUnconventional magnetic vortex structures observed in micromagnetic simulationsen_US
dc.typeArticleen_US
dc.identifier.emailWang, H: wangh75@hku.hk-
dc.identifier.doi10.1016/j.jmmm.2008.02.170-
dc.identifier.scopuseid_2-s2.0-42749095688-
dc.identifier.hkuros204030-
dc.identifier.volume320-
dc.identifier.issue13-
dc.identifier.spage1937-
dc.identifier.epage1944-
dc.identifier.isiWOS:000255512400016-
dc.publisher.placeNetherlands-

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