Axially and radially quantized spin waves in thick permalloy nanodots

X. Zhou, D. Kumar, Ivan Maksymov, Mikhail Kostylev, A.O. Adeyeye

    Research output: Contribution to journalArticle

    8 Citations (Scopus)

    Abstract

    © 2015 American Physical Society. We have investigated the spin wave modes in perpendicularly magnetized permalloy nanodots as a function of film thickness using field modulated perpendicular ferromagnetic resonance spectroscopy. We observed mode intensity inversion with an increase in dot thickness. In thicker dots, one ellusive antisymmetric spin wave mode was also detected due to the asymmetric nature of the excitation signal. In the case of the thickest nanodot, a circulating chiral mode near the dot surface was also observed. Our experimental results are in good qualitative agreement with the dynamic micromagnetic simulations.
    Original languageEnglish
    Pages (from-to)054401-1 - 054401-5
    JournalPhysical Review B - Condensed Matter and Materials Physics
    Volume92
    Issue number5
    DOIs
    Publication statusPublished - 2015

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    Spin waves
    Permalloys (trademark)
    magnons
    Ferromagnetic resonance
    Film thickness
    Spectroscopy
    Computer simulation
    ferromagnetic resonance
    film thickness
    inversions
    spectroscopy
    excitation
    simulation

    Cite this

    Zhou, X. ; Kumar, D. ; Maksymov, Ivan ; Kostylev, Mikhail ; Adeyeye, A.O. / Axially and radially quantized spin waves in thick permalloy nanodots. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 92, No. 5. pp. 054401-1 - 054401-5.
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    author = "X. Zhou and D. Kumar and Ivan Maksymov and Mikhail Kostylev and A.O. Adeyeye",
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    doi = "10.1103/PhysRevB.92.054401",
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    Axially and radially quantized spin waves in thick permalloy nanodots. / Zhou, X.; Kumar, D.; Maksymov, Ivan; Kostylev, Mikhail; Adeyeye, A.O.

    In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 5, 2015, p. 054401-1 - 054401-5.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - Axially and radially quantized spin waves in thick permalloy nanodots

    AU - Zhou, X.

    AU - Kumar, D.

    AU - Maksymov, Ivan

    AU - Kostylev, Mikhail

    AU - Adeyeye, A.O.

    PY - 2015

    Y1 - 2015

    N2 - © 2015 American Physical Society. We have investigated the spin wave modes in perpendicularly magnetized permalloy nanodots as a function of film thickness using field modulated perpendicular ferromagnetic resonance spectroscopy. We observed mode intensity inversion with an increase in dot thickness. In thicker dots, one ellusive antisymmetric spin wave mode was also detected due to the asymmetric nature of the excitation signal. In the case of the thickest nanodot, a circulating chiral mode near the dot surface was also observed. Our experimental results are in good qualitative agreement with the dynamic micromagnetic simulations.

    AB - © 2015 American Physical Society. We have investigated the spin wave modes in perpendicularly magnetized permalloy nanodots as a function of film thickness using field modulated perpendicular ferromagnetic resonance spectroscopy. We observed mode intensity inversion with an increase in dot thickness. In thicker dots, one ellusive antisymmetric spin wave mode was also detected due to the asymmetric nature of the excitation signal. In the case of the thickest nanodot, a circulating chiral mode near the dot surface was also observed. Our experimental results are in good qualitative agreement with the dynamic micromagnetic simulations.

    U2 - 10.1103/PhysRevB.92.054401

    DO - 10.1103/PhysRevB.92.054401

    M3 - Article

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    SP - 054401-1 - 054401-5

    JO - Physical Review B

    JF - Physical Review B

    SN - 1098-0121

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