Ferromagnetic resonance in magnetite thin films

Masaki Nagata, Kenji Tanabe, Takahiro Moriyama, Daichi Chiba, Jun Ichiro Ohe, Makoto Myoka, Tomohiko Niizeki, Hideto Yanagihara, Eiji Kita, Teruo Ono

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    We have been investigating the spin motive force induced by magnetization dynamics in ferromagnetic materials. Ferrimagnetic materials are expected to exhibit even larger spin motive force due to their spatially staggered magnetic structure and high frequency spin wave modes. We believe that magnetite (Fe 3O4) is one of the candidates for this purpose. Here, we report magnetic resonance in Fe3O4 thin films epitaxially grown on a MgO (001) substrate. The gyromagnetic ratio and the effective saturation magnetization are estimated to be 1.71 × 1011 s -1T-1 and 364 emu/cm3, respectively. The Gilbert damping constant of 0.02 is obtained from the magnetic field dependence of the linewidth. We expect to investigate the spin motive force induced from this magnetic resonance.

    Original languageEnglish
    Article number2274270
    JournalIEEE Transactions on Magnetics
    Volume50
    Issue number1
    DOIs
    Publication statusPublished - 2014 Jan

    Keywords

    • Magnetic layered films
    • Magnetic resonance

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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  • Cite this

    Nagata, M., Tanabe, K., Moriyama, T., Chiba, D., Ohe, J. I., Myoka, M., Niizeki, T., Yanagihara, H., Kita, E., & Ono, T. (2014). Ferromagnetic resonance in magnetite thin films. IEEE Transactions on Magnetics, 50(1), [2274270]. https://doi.org/10.1109/TMAG.2013.2274270