Micromagnetic simulations of absoption spectra

K. Rivkin*, J. B. Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

17 Scopus citations

Abstract

Further development of a previously introduced method for numerically simulating magnetic spin waves is presented. Together with significant improvements in speed, the method now allows one to calculate the energy absorbed by the various modes excited by a position- and time-dependent H1 field in a ferromagnetic body of arbitrary shape in the presence of a (uniform or non-uniform) static H0 field as well as the internal exchange and anisotropy fields. The method is applied to the case of the single vortex state in a thin disc, a ring, and various square slabs, for which the absorption spectra are calculated and the most strongly excited resonance modes are identified.

Original languageEnglish (US)
Pages (from-to)204-210
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume306
Issue number2
DOIs
StatePublished - Nov 2006

Keywords

  • Magnetic nanostructures
  • Magnetic vortex
  • Micromagnetic modelling
  • Spin waves

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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