Broadband spin dynamics of Permalloy rings in the circulation state

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DOIResolve DOI: http://doi.org/10.1063/1.1957107
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TypeArticle
Journal titleApplied Physics Letters
Volume86
Issue26
Pages262502-1262502-3; # of pages: 3
Subjectferromagnetic materials; ferromagnetic resonance; magnons; Permalloy; remanence; spin dynamics
AbstractThe spin dynamics of the remanent state of circulating magnetization in micrometer-scale Permalloy rings is studied by broadband ferromagnetic resonance. A number of resonance modes are observed, depending upon the geometries of coupling the transient excitation to the ring and of magneto-optically monitoring the response. The two dominant modes involve precession with uniform phase around the ring, or in a circularly antisymmetric standing wave pattern with two nodes. Other magnetic normal modes are also excited but with much smaller amplitude.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada
Peer reviewedNo
NRC number39
NPARC number12333699
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Record identifiera8b3ebff-7f6a-453b-b424-bd9dfcf541ef
Record created2009-09-10
Record modified2016-05-09
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