Ferromagnetic resonances in microwires and nanowires

Ferromagnetic resonance (FMR) in a single thin conducting ferromagnetic wire is investigated from theoretical and experimental points of view. It is shown that the wire radius, the symmetry of microwave magnetic field at the sample surface, and the skin depth (magnetic and nonmagnetic) should be con...

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Detalles Bibliográficos
Autores: Kraus, L., Infante, Germán, Frait, Zdenek
Tipo de recurso: artículo
Fecha de publicación:2011
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/36132
Acceso en línea:http://hdl.handle.net/10261/36132
Access Level:acceso abierto
Palabra clave:Magnetismo
Hilos magnéticos
Resonancia Ferromagnética
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spelling Ferromagnetic resonances in microwires and nanowiresKraus, L.Infante, GermánFrait, ZdenekMagnetismoHilos magnéticosResonancia FerromagnéticaFerromagnetic resonance (FMR) in a single thin conducting ferromagnetic wire is investigated from theoretical and experimental points of view. It is shown that the wire radius, the symmetry of microwave magnetic field at the sample surface, and the skin depth (magnetic and nonmagnetic) should be considered as a whole for a correct interpretation of the microwave absorption. As a consequence, various resonance modes can be excited in metallic wires. The resonance fields of bulk samples satisfy the Kittel's resonance condition for a thin planar plate (FMR0). However, as the wire radius decreases below the nonmagnetic skin depth a weak resonance peak separates from the main resonance and moves to the field fulfilling the Kittel's resonance condition for an axially magnetized cylinder (FMR1). Theoretical predictions show that this “insulator” resonance mode should be the dominant one for a nanowire, where the radius is much smaller than the minimum magnetic skin depth. The existence of the two resonance modes is supported by experimental results on thin (down to 1.5-μm thick) amorphous microwires.Peer reviewed201120112011info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/36132reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglésinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/361322026-05-22T06:33:51Z
dc.title.none.fl_str_mv Ferromagnetic resonances in microwires and nanowires
title Ferromagnetic resonances in microwires and nanowires
spellingShingle Ferromagnetic resonances in microwires and nanowires
Kraus, L.
Magnetismo
Hilos magnéticos
Resonancia Ferromagnética
title_short Ferromagnetic resonances in microwires and nanowires
title_full Ferromagnetic resonances in microwires and nanowires
title_fullStr Ferromagnetic resonances in microwires and nanowires
title_full_unstemmed Ferromagnetic resonances in microwires and nanowires
title_sort Ferromagnetic resonances in microwires and nanowires
dc.creator.none.fl_str_mv Kraus, L.
Infante, Germán
Frait, Zdenek
author Kraus, L.
author_facet Kraus, L.
Infante, Germán
Frait, Zdenek
author_role author
author2 Infante, Germán
Frait, Zdenek
author2_role author
author
dc.subject.none.fl_str_mv Magnetismo
Hilos magnéticos
Resonancia Ferromagnética
topic Magnetismo
Hilos magnéticos
Resonancia Ferromagnética
description Ferromagnetic resonance (FMR) in a single thin conducting ferromagnetic wire is investigated from theoretical and experimental points of view. It is shown that the wire radius, the symmetry of microwave magnetic field at the sample surface, and the skin depth (magnetic and nonmagnetic) should be considered as a whole for a correct interpretation of the microwave absorption. As a consequence, various resonance modes can be excited in metallic wires. The resonance fields of bulk samples satisfy the Kittel's resonance condition for a thin planar plate (FMR0). However, as the wire radius decreases below the nonmagnetic skin depth a weak resonance peak separates from the main resonance and moves to the field fulfilling the Kittel's resonance condition for an axially magnetized cylinder (FMR1). Theoretical predictions show that this “insulator” resonance mode should be the dominant one for a nanowire, where the radius is much smaller than the minimum magnetic skin depth. The existence of the two resonance modes is supported by experimental results on thin (down to 1.5-μm thick) amorphous microwires.
publishDate 2011
dc.date.none.fl_str_mv 2011
2011
2011
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/36132
url http://hdl.handle.net/10261/36132
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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