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Shape effects on magnetization state transitions in individual 160-nm diameter permalloy disks

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1103/PhysRevB.77.174410
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Affiliation
  1. National Research Council of Canada. National Institute for Nanotechnology
FormatText, Article
Abstract
The spin dynamics in individual Permalloy nanodisks has been investigated by using time-resolved magneto-optical Kerr effect microscopy. Transitions between the vortex and quasisingle domain states have been observed by sweeping the applied bias field, and the critical bias fields for triggering vortex annihilation and nucleation have been determined by associated frequency shifts of 5–10 GHz in ferromagnetic resonance. The shape of the nanodisks has to be taken into account in three-dimensional micromagnetic simulations to obtain consistent results for the critical fields when compared to the experiment.
Publication date
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  • Physical Review. B, Condensed Matter and Materials Physics 77, no. 17, 174410 (8 May 2008): 174410-1–1744410-5.
LanguageEnglish
Peer reviewedYes
NRC numberNRC-NINT-554
NRC-NINT-360
NPARC number8926298
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Record identifier1524376c-0bb5-46d5-96bf-69ed833e936d
Record created2009-04-23
Record modified2020-04-15
Date modified: