Low-field FMR studies of magnetic confinement effects in patterned ferromagnetic thin films

V. Bhat*, J. Woods, J. T. Hastings, L. E. De Long, J. Sklenar, John B Ketterson, O. Heinonen, K. Rivkin, V. Metlushko

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have performed broad-band (10 MHz-20 GHz) and tuned cavity (9.7 GHz) ferromagnetic resonance measurements on permalloy thin films patterned with square lattices of circular, square and diamond-shaped antidots of various sizes and separations. We observe remarkably reproducible mode structures in the low-frequency, hysteretic regime in which various domain wall patterns and unsaturated magnetization textures exist and are strongly affected by the geometry of the antidot lattice. The field, frequency and angular dependences of the observed modes (some of which have not been previously observed) are generally in good agreement with our micromagnetic simulations.

Original languageEnglish (US)
Title of host publicationProceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11
Pages718-721
Number of pages4
DOIs
StatePublished - Nov 7 2011
Event2011 13th International Conference on Electromagnetics in Advanced Applications, ICEAA'11 - Torino, Italy
Duration: Sep 12 2011Sep 16 2011

Publication series

NameProceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11

Other

Other2011 13th International Conference on Electromagnetics in Advanced Applications, ICEAA'11
CountryItaly
CityTorino
Period9/12/119/16/11

ASJC Scopus subject areas

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

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    Bhat, V., Woods, J., Hastings, J. T., De Long, L. E., Sklenar, J., Ketterson, J. B., Heinonen, O., Rivkin, K., & Metlushko, V. (2011). Low-field FMR studies of magnetic confinement effects in patterned ferromagnetic thin films. In Proceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11 (pp. 718-721). [6046431] (Proceedings - 2011 International Conference on Electromagnetics in Advanced Applications, ICEAA'11). https://doi.org/10.1109/ICEAA.2011.6046431