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.
|Applied Physics Letters
|Published - Apr 15 2013
Bibliographical noteFunding Information:
This work received support by the Air Force Office of Scientific Research and NSF supported Northwestern International Institute for Nanoscience. This work utilized facilities maintained by the NSF supported Northwestern Materials Research Center. Research at the University of Kentucky is supported by the U.S. DoE Office of Basic Energy Sciences Grant DE-FGO2-97ER45653. Argonne National Laboratory is operated under Contract No. DE-AC02-06CH11357 by UChicago Argonne, LLC.
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)