A rigorous two-dimensional model for the stripline ferromagnetic resonance response of metallic ferromagnetic films

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    Abstract

    © 2015 AIP Publishing LLC. In this work, we constructed a two-dimensional numerical model for calculation of the stripline ferromagnetic resonance (FMR) response of metallic ferromagnetic films. We also conducted numerical calculations by using this software. The calculations demonstrated that the eddy current contribution to the FMR response decreases with a decrease in the stripline width. The most important manifestations of the conductivity (eddy current) effect are excitation of the higher-order standing spin waves across the film thickness in the materials for which the standing spin wave peaks would be absent in cavity FMR measurements and strong dependence of the off-resonance series conductance of the stripline on the stripline width. Whereas the contribution of the eddy currents to the stripline FMR response can be very significant, because wide striplines (100 μm+) are conventionally used for the FMR measurements, it is negligible in the case of excitation of spin waves, just because very narrow stripline transducers (0.5-5 μm wide) are required in order to excite spin waves in metallic ferromagnetic films in a noticeable frequency/applied field range.
    Original languageEnglish
    Pages (from-to)053908
    JournalJournal of Applied Physics
    Volume117
    Issue number5
    DOIs
    Publication statusPublished - 4 Feb 2015

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    ferromagnetic films
    ferromagnetic resonance
    two dimensional models
    magnons
    eddy currents
    excitation
    transducers
    film thickness
    computer programs
    conductivity
    cavities

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    @article{e61ef20e4e8d43d1bda8fdc5e4cf8aeb,
    title = "A rigorous two-dimensional model for the stripline ferromagnetic resonance response of metallic ferromagnetic films",
    abstract = "{\circledC} 2015 AIP Publishing LLC. In this work, we constructed a two-dimensional numerical model for calculation of the stripline ferromagnetic resonance (FMR) response of metallic ferromagnetic films. We also conducted numerical calculations by using this software. The calculations demonstrated that the eddy current contribution to the FMR response decreases with a decrease in the stripline width. The most important manifestations of the conductivity (eddy current) effect are excitation of the higher-order standing spin waves across the film thickness in the materials for which the standing spin wave peaks would be absent in cavity FMR measurements and strong dependence of the off-resonance series conductance of the stripline on the stripline width. Whereas the contribution of the eddy currents to the stripline FMR response can be very significant, because wide striplines (100 μm+) are conventionally used for the FMR measurements, it is negligible in the case of excitation of spin waves, just because very narrow stripline transducers (0.5-5 μm wide) are required in order to excite spin waves in metallic ferromagnetic films in a noticeable frequency/applied field range.",
    author = "Z. Lin and Mikhail Kostylev",
    year = "2015",
    month = "2",
    day = "4",
    doi = "10.1063/1.4907535",
    language = "English",
    volume = "117",
    pages = "053908",
    journal = "J. Applied Physics",
    issn = "0021-8979",
    publisher = "ACOUSTICAL SOC AMER AMER INST PHYSICS",
    number = "5",

    }

    A rigorous two-dimensional model for the stripline ferromagnetic resonance response of metallic ferromagnetic films. / Lin, Z.; Kostylev, Mikhail.

    In: Journal of Applied Physics, Vol. 117, No. 5, 04.02.2015, p. 053908.

    Research output: Contribution to journalArticle

    TY - JOUR

    T1 - A rigorous two-dimensional model for the stripline ferromagnetic resonance response of metallic ferromagnetic films

    AU - Lin, Z.

    AU - Kostylev, Mikhail

    PY - 2015/2/4

    Y1 - 2015/2/4

    N2 - © 2015 AIP Publishing LLC. In this work, we constructed a two-dimensional numerical model for calculation of the stripline ferromagnetic resonance (FMR) response of metallic ferromagnetic films. We also conducted numerical calculations by using this software. The calculations demonstrated that the eddy current contribution to the FMR response decreases with a decrease in the stripline width. The most important manifestations of the conductivity (eddy current) effect are excitation of the higher-order standing spin waves across the film thickness in the materials for which the standing spin wave peaks would be absent in cavity FMR measurements and strong dependence of the off-resonance series conductance of the stripline on the stripline width. Whereas the contribution of the eddy currents to the stripline FMR response can be very significant, because wide striplines (100 μm+) are conventionally used for the FMR measurements, it is negligible in the case of excitation of spin waves, just because very narrow stripline transducers (0.5-5 μm wide) are required in order to excite spin waves in metallic ferromagnetic films in a noticeable frequency/applied field range.

    AB - © 2015 AIP Publishing LLC. In this work, we constructed a two-dimensional numerical model for calculation of the stripline ferromagnetic resonance (FMR) response of metallic ferromagnetic films. We also conducted numerical calculations by using this software. The calculations demonstrated that the eddy current contribution to the FMR response decreases with a decrease in the stripline width. The most important manifestations of the conductivity (eddy current) effect are excitation of the higher-order standing spin waves across the film thickness in the materials for which the standing spin wave peaks would be absent in cavity FMR measurements and strong dependence of the off-resonance series conductance of the stripline on the stripline width. Whereas the contribution of the eddy currents to the stripline FMR response can be very significant, because wide striplines (100 μm+) are conventionally used for the FMR measurements, it is negligible in the case of excitation of spin waves, just because very narrow stripline transducers (0.5-5 μm wide) are required in order to excite spin waves in metallic ferromagnetic films in a noticeable frequency/applied field range.

    U2 - 10.1063/1.4907535

    DO - 10.1063/1.4907535

    M3 - Article

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    SP - 053908

    JO - J. Applied Physics

    JF - J. Applied Physics

    SN - 0021-8979

    IS - 5

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