Spin wave spectra in perpendicularly magnetized permalloy rings

X. Zhou; J. Ding; Mikhail Kostylev; A.O. Adeyeye

doi:10.1063/1.4916029

Spin wave spectra in perpendicularly magnetized permalloy rings

X. Zhou, J. Ding, Mikhail Kostylev, A.O. Adeyeye

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Abstract

© 2015 AIP Publishing LLC. The dynamic behavior of perpendicularly magnetized permalloy circular rings is systematically investigated as a function of film thickness using broadband field modulated ferromagnetic resonance spectroscopy. We observed the splitting of one spin wave mode into a family of dense resonance peaks for the rings, which is markedly different from the single mode observed for continuous films of the same thickness. As the excitation frequency is increased, the mode family observed for the rings gradually converges into one mode. With the increase in the film thickness, a sparser spectrum of modes is observed. Our experimental results are in qualitative agreement with the dynamic micromagnetic simulations.

Original language	English
Article number	112403
Number of pages	5
Journal	Applied Physics Letters
Volume	106
DOIs	https://doi.org/10.1063/1.4916029
Publication status	Published - 20 Mar 2015

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10.1063/1.4916029

Zhou, et al, Spin wave spectra in perpendicularly magnetized permalloy rings, (2015)Final published version, 1.36 MB

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title = "Spin wave spectra in perpendicularly magnetized permalloy rings",

abstract = "{\textcopyright} 2015 AIP Publishing LLC. The dynamic behavior of perpendicularly magnetized permalloy circular rings is systematically investigated as a function of film thickness using broadband field modulated ferromagnetic resonance spectroscopy. We observed the splitting of one spin wave mode into a family of dense resonance peaks for the rings, which is markedly different from the single mode observed for continuous films of the same thickness. As the excitation frequency is increased, the mode family observed for the rings gradually converges into one mode. With the increase in the film thickness, a sparser spectrum of modes is observed. Our experimental results are in qualitative agreement with the dynamic micromagnetic simulations.",

author = "X. Zhou and J. Ding and Mikhail Kostylev and A.O. Adeyeye",

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T1 - Spin wave spectra in perpendicularly magnetized permalloy rings

AU - Zhou, X.

AU - Ding, J.

AU - Kostylev, Mikhail

AU - Adeyeye, A.O.

PY - 2015/3/20

Y1 - 2015/3/20

N2 - © 2015 AIP Publishing LLC. The dynamic behavior of perpendicularly magnetized permalloy circular rings is systematically investigated as a function of film thickness using broadband field modulated ferromagnetic resonance spectroscopy. We observed the splitting of one spin wave mode into a family of dense resonance peaks for the rings, which is markedly different from the single mode observed for continuous films of the same thickness. As the excitation frequency is increased, the mode family observed for the rings gradually converges into one mode. With the increase in the film thickness, a sparser spectrum of modes is observed. Our experimental results are in qualitative agreement with the dynamic micromagnetic simulations.

AB - © 2015 AIP Publishing LLC. The dynamic behavior of perpendicularly magnetized permalloy circular rings is systematically investigated as a function of film thickness using broadband field modulated ferromagnetic resonance spectroscopy. We observed the splitting of one spin wave mode into a family of dense resonance peaks for the rings, which is markedly different from the single mode observed for continuous films of the same thickness. As the excitation frequency is increased, the mode family observed for the rings gradually converges into one mode. With the increase in the film thickness, a sparser spectrum of modes is observed. Our experimental results are in qualitative agreement with the dynamic micromagnetic simulations.

U2 - 10.1063/1.4916029

DO - 10.1063/1.4916029

M3 - Article

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JO - Applied Physics Letters

JF - Applied Physics Letters

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