High-temperature coercivity and Kerr spectroscopy on MnBi/Al multilayers

U. Rüdiger, J. Köhler, A. D. Kent, T. Legero, J. Kübler, P. Fumagalli, G. Güntherodt

    Research output: Contribution to journalConference article


    The magneto-optic properties of multilayered MnBi/Al films have been investigated and compared to pure MnBi films. The Al interlayers act as diffusion barrier during the MnBi formation process leading to a reduced MnBi particle size of approximately 50 nm. The smaller particle size changes the dominant magnetization reversal process from domain wall movement towards coherent rotation. This leads to a suppression of the anomalous increase of the high-temperature coercivity observed in pure MnBi. The comparison of the experimental polar Kerr spectra with theory elucidates the role of oxygen in MnBi films.

    Original languageEnglish (US)
    Pages (from-to)131-133
    Number of pages3
    JournalJournal of Magnetism and Magnetic Materials
    StatePublished - Jun 1 1999
    EventProceedings of the 1998 3rd International Symposium on Metallic Multilayers (MML-98) - Vancouver, BC, Can
    Duration: Jun 14 1998Jun 19 1998

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Condensed Matter Physics

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    Rüdiger, U., Köhler, J., Kent, A. D., Legero, T., Kübler, J., Fumagalli, P., & Güntherodt, G. (1999). High-temperature coercivity and Kerr spectroscopy on MnBi/Al multilayers. Journal of Magnetism and Magnetic Materials, 198, 131-133. https://doi.org/10.1016/S0304-8853(98)01011-7