Damping and modal structure of patterned magnetic nanoarrays

K. Rivkin*, I. P. Nevirkovets, O. Chernyashevskyy, J. B. Ketterson, B. K. Sarma, V. Metlushko

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

A number of studies have shown that ferromagnetic resonance linewidths in magnetic thin films contain a significant contribution due to processes, such as inhomogeneous broadening and two-magnon scattering followed by decay to the phonon thermal bath. We present a classical theoretical approach that permits the calculation of such processes for arrays of arbitrarily shaped magnetic nanoparticles and, by comparison with experimental results, demonstrates that the linewidth broadening and damping are dominated by inhomogenities that strongly depend on the equilibrium state of magnetization and can be used to identify the latter.

Original languageEnglish (US)
Pages (from-to)3324-3329
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume321
Issue number19
DOIs
StatePublished - Oct 1 2009

Keywords

  • Ferromagnetic resonance
  • Inhomogeneous broadening
  • Spin waves
  • Two-magnon scattering

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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