Controlling the Suhl instability in magnetic nanoparticles: A numerical study

K. Rivkin*, W. Saslow, John B Ketterson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Non-linear excitation of non-uniform spin waves (Suhl instability) is of profound importance when it comes to magnetization reversal using r.f. fields. Here we numerically show that this instability can be suppressed by choosing the applied field and/or sphere diameter in such a way that the frequencies of the modes that can be excited through non-linear processes are off-resonance. While the results cannot be explained by a traditional model based on plane waves, they can be understood by projecting the actual state onto the small amplitude spin wave eigenfunctions.

Original languageEnglish (US)
Pages (from-to)72-76
Number of pages5
JournalJournal of Nanoelectronics and Optoelectronics
Volume3
Issue number1
DOIs
StatePublished - Mar 1 2008

Keywords

  • Ferromagnetic resonance
  • Magnetic nanoparticles
  • Suhl instability

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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