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Investigation of magnetically coupled ferromagnetic stripe arrays

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Abstract

We studied the magnetic coupling of ferromagnetic, submicron-sized stripes in the material system MnAs on GaAs. A specific coupling state, determined by stripe period and stripe width, can be tuned via film thickness and temperature, respectively. Micromagnetic imaging – in combination with micromagnetic simulations – reveals two coupling regimes. Strong magnetic coupling between the stripes creates micromagnetic domains extending across several stripes, whereas weak coupling allows for demagnetization within individual stripes. This behavior is observed for all investigatedfilm thicknesses, since a stripe geometry leading to a given coupling scenario is a function of temperature.

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Authors and Affiliations

  1. Paul-Drude-Institut für Festkörperelektronik, Hausvogteiplatz 5–7, 10117, Berlin, Germany

    R. Engel-Herbert, D.M. Schaadt, J. Mohanty, K.H. Ploog & T. Hesjedal

  2. Sincrotrone Trieste, S.S. 14, km 163.5, 34012, Basovizza (TS), Italy

    A. Locatelli, S. Cherifi, E. Bauer, R. Belkhou & S. Heun

  3. Department of Physics and Astronomy, Arizona State University, Tempe, AZ, 85287-1504, USA

    E. Bauer & A. Pavlovska

  4. LURE, Bat 209D, Université Paris-Sud, BP34, 91898, Orsay, France

    R. Belkhou

  5. CNRS-Laboratoire Louis Néel, BP166, 38042, Grenoble, France

    S. Cherifi

  6. Laboratorio Nazionale TASC, S.S. 14, km 163.5, Area Science Park, 34012, Basovizza (TS), Italy

    S. Heun

  7. Science and Engineering of Materials, Arizona State University, Tempe, AZ, 85281, USA

    T. Leo

Authors
  1. R. Engel-Herbert
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  2. A. Locatelli
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  3. S. Cherifi
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  4. D.M. Schaadt
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  5. J. Mohanty
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  6. K.H. Ploog
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  7. E. Bauer
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  8. R. Belkhou
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  9. S. Heun
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  10. A. Pavlovska
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  11. T. Leo
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  12. T. Hesjedal
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Corresponding author

Correspondence to T. Hesjedal.

Additional information

PACS

68.37.Rt; 68.35.Rh; 75.70.-i; 75.70.Kw

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Engel-Herbert, R., Locatelli, A., Cherifi, S. et al. Investigation of magnetically coupled ferromagnetic stripe arrays. Appl. Phys. A 84, 231–236 (2006). https://doi.org/10.1007/s00339-006-3619-8

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  • DOI: https://doi.org/10.1007/s00339-006-3619-8

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