Strongly localized magnetization modes in permalloy antidot lattices

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

doi:10.1063/1.4802278

Strongly localized magnetization modes in permalloy antidot lattices

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

Physics And Astronomy

Research output: Contribution to journal › Article › peer-review

21 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 language	English
Article number	152412
Journal	Applied Physics Letters
Volume	102
Issue number	15
DOIs	https://doi.org/10.1063/1.4802278
State	Published - Apr 15 2013

Bibliographical note

Funding 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)

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title = "Strongly localized magnetization modes in permalloy antidot lattices",

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.",

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AU - Sklenar, J.

AU - Bhat, V. S.

AU - Delong, L. E.

AU - Heinonen, O.

AU - Ketterson, J. B.

N1 - Funding 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.

PY - 2013/4/15

Y1 - 2013/4/15

N2 - 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.

AB - 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.

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Strongly localized magnetization modes in permalloy antidot lattices

Abstract

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