Spin wave spectra in perpendicularly magnetized permalloy rings

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

    Research output: Contribution to journalArticle

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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 languageEnglish
    Article number112403
    Number of pages5
    JournalApplied Physics Letters
    Volume106
    DOIs
    Publication statusPublished - 20 Mar 2015

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    Permalloys (trademark)
    magnons
    rings
    film thickness
    ferromagnetic resonance
    broadband
    spectroscopy
    excitation
    simulation

    Cite this

    @article{292f39f08c914483837677fffa01c559,
    title = "Spin wave spectra in perpendicularly magnetized permalloy rings",
    abstract = "{\circledC} 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",
    year = "2015",
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    doi = "10.1063/1.4916029",
    language = "English",
    volume = "106",
    journal = "Applied Physics Letters",
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    Spin wave spectra in perpendicularly magnetized permalloy rings. / Zhou, X.; Ding, J.; Kostylev, Mikhail; Adeyeye, A.O.

    In: Applied Physics Letters, Vol. 106, 112403, 20.03.2015.

    Research output: Contribution to journalArticle

    TY - JOUR

    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

    VL - 106

    JO - Applied Physics Letters

    JF - Applied Physics Letters

    SN - 0003-6951

    M1 - 112403

    ER -