Strongly localized magnetization modes in permalloy antidot lattices

J. Sklenar, V. S. Bhat, L. E. Delong, O. Heinonen, J. B. Ketterson

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20 Scopus citations

Abstract

Antidot lattices (ADLs) patterned into soft magnetic thin films exhibit rich ferromagnetic resonance (FMR) spectra corresponding to many different magnetization modes. One of the predicted modes is highly localized at the edges of the antidots; this mode is difficult to detect experimentally. Here we present FMR data for a permalloy thin film patterned into a square array of square antidots. Comparison of these data with micromagnetic simulations permits identification of several edge modes. Our simulations also reveal the effect of the antidot shape on the mode dispersion.

Original languageEnglish (US)
Article number152412
JournalApplied Physics Letters
Volume102
Issue number15
DOIs
StatePublished - Apr 15 2013

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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