Comparative study of the ferromagnetic resonance behavior of coupled rectangular and circular Ni[subscript 80]Fe[subscript 20] rings

Author(s)
Shimon, G.; Adeyeye, Adekunle Olusola; Ross, Caroline A.
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Abstract
A systematic investigation of the dynamic behavior of Ni[subscript 80]Fe[subscript 20] ring arrays using broadband ferromagnetic resonance spectroscopy as a function of inter-ring spacing and ring thickness is presented. Four distinct resonance modes were found for rectangular rings compared to the two modes seen in circular rings of identical width due to the presence of sharp corners and nonuniform demagnetization field distribution. The resonance peaks were sensitive to the inter-ring spacing and the ring thickness due to magnetostatic coupling. Micromagnetic simulations and analytical calculations are compared with the experiment results.
Date issued
2014-01
URI
http://hdl.handle.net/1721.1/86077
Department
Massachusetts Institute of Technology. Department of Materials Science and Engineering
Journal
Physical Review B
Publisher
American Physical Society
Citation
Shimon, G., A. O. Adeyeye, and C. A. Ross. “Comparative Study of the Ferromagnetic Resonance Behavior of Coupled Rectangular and Circular Ni80Fe20 Rings.” Phys. Rev. B 89, no. 2 (January 2014). © 2014 American Physical Society
Version: Final published version
ISSN
1098-0121
1550-235X
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