Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements

C. König, M. Sperlich, R. Calarco, J. O. Hauch, U. Rüdiger, G. Güntherodt, S. Kirsch, B. Özyilmaz, A. D. Kent

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    The magnetization reversal processes and magnetic domain states of microstructured epitaxial Fe[110] elements have been investigated by magnetic force microscopy and longitudinal Kerr hysteresis loop measurements. For this purpose 25 nm thick epitaxial Fe[110] films were grown on (11-20) oriented Al2O3 substrates using molecular beam epitaxy techniques in ultra high vacuum. These films have been patterned into arrays of well defined magnetic elements with lateral dimensions of 1.5 μmx0.5 μm by electron beam lithography followed by argon ion milling. Two different particle shapes have been realized: rectangular and diamond- shaped elements. By aligning the long axis of the particles parallel to the easy magnetic axis of the Fe[110] films, i.e. the in-plane Fe[001] direction, the interplay of shape, magnetocrystalline, as well as the strain-induced uniaxial anisotropy favors a single domain state. It has been shown that the characteristic micromagnetic behavior such as coercive and nucleation fields can be tailored by taking advantage of the pronounced uniaxial anisotropy and by varying the shape of the elements. Independent of the shape of the elements the remanent state after magnetic saturation along the long axis of the elements is a single domain state. In contrast, after magnetic saturation perpendicular to the long axis various multi-domain states have been observed. The determined flux closure domain states are in good agreement with micromagnetic simulations.

    Original languageEnglish (US)
    Title of host publicationINTERMAG Europe 2002 - IEEE International Magnetics Conference
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    ISBN (Electronic)0780373650, 9780780373655
    DOIs
    StatePublished - 2002
    Event2002 IEEE International Magnetics Conference, INTERMAG Europe 2002 - Amsterdam, Netherlands
    Duration: Apr 28 2002May 2 2002

    Other

    Other2002 IEEE International Magnetics Conference, INTERMAG Europe 2002
    CountryNetherlands
    CityAmsterdam
    Period4/28/025/2/02

    Fingerprint

    Magnetization reversal
    Saturation magnetization
    Anisotropy
    Magnetic force microscopy
    Magnetic domains
    Diamond
    Electron beam lithography
    Argon
    Ultrahigh vacuum
    Hysteresis loops
    Molecular beam epitaxy
    Diamonds
    Nucleation
    Ions
    Fluxes
    Substrates

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering
    • Surfaces, Coatings and Films

    Cite this

    König, C., Sperlich, M., Calarco, R., Hauch, J. O., Rüdiger, U., Güntherodt, G., ... Kent, A. D. (2002). Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements. In INTERMAG Europe 2002 - IEEE International Magnetics Conference [1001211] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/INTMAG.2002.1001211

    Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements. / König, C.; Sperlich, M.; Calarco, R.; Hauch, J. O.; Rüdiger, U.; Güntherodt, G.; Kirsch, S.; Özyilmaz, B.; Kent, A. D.

    INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc., 2002. 1001211.

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    König, C, Sperlich, M, Calarco, R, Hauch, JO, Rüdiger, U, Güntherodt, G, Kirsch, S, Özyilmaz, B & Kent, AD 2002, Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements. in INTERMAG Europe 2002 - IEEE International Magnetics Conference., 1001211, Institute of Electrical and Electronics Engineers Inc., 2002 IEEE International Magnetics Conference, INTERMAG Europe 2002, Amsterdam, Netherlands, 4/28/02. https://doi.org/10.1109/INTMAG.2002.1001211
    König C, Sperlich M, Calarco R, Hauch JO, Rüdiger U, Güntherodt G et al. Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements. In INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc. 2002. 1001211 https://doi.org/10.1109/INTMAG.2002.1001211
    König, C. ; Sperlich, M. ; Calarco, R. ; Hauch, J. O. ; Rüdiger, U. ; Güntherodt, G. ; Kirsch, S. ; Özyilmaz, B. ; Kent, A. D. / Shape dependent magnetization reversal processes of microstructured epitaxial Fe(110) elements. INTERMAG Europe 2002 - IEEE International Magnetics Conference. Institute of Electrical and Electronics Engineers Inc., 2002.
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    AU - Rüdiger, U.

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