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Influence of dipole-dipole interactions on the angular dependence of ferromagnetic resonance spectra in arrays of Fe/FexOy core/shell nanocubes

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Abstract

We present a detailed theoretical study of the role of long-range dipole-dipole interactions on the angular dependence of ferromagnetic resonance spectra in a two-dimensional array of nanocubes. Variations of polar (φ) and azimuthal (θ) angles are studied numerically and analytically to illustrate the effect of the magnetocrystalline properties and the dipole-dipole interactions, forming complex resonance bands. In addition, we show that when the static magnetic field lies in the arrays’ plane under the angle of 129° with the edge of the array or when its tilted around 15° to the plane’s normal, the spectra of absorption transform into a plateau spanning from 0.1 T to 0.4 T, which is prominent enough for experimental observation.

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Authors and Affiliations

  1. Centro de Investigación en Materiales Avanzados (CIMAV S.C.), Chihuahua/Monterrey, 31109, Chihuahua, Mexico

    Paul P. Horley

  2. Institut für Physik, Martin-Luther-Universität Halle-Wittenberg, 06099, Halle (Saale), Germany

    Alexander Sukhov & Jamal Berakdar

  3. CINVESTAV Unidad Querétaro, Libramiento Norponiente 2000, Fracc. Real de Juriquilla, 76230, Querétaro, Mexico

    Luis G. Trápaga-Martínez

Authors
  1. Paul P. Horley
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  2. Alexander Sukhov
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  3. Jamal Berakdar
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  4. Luis G. Trápaga-Martínez
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Correspondence to Paul P. Horley.

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Horley, P.P., Sukhov, A., Berakdar, J. et al. Influence of dipole-dipole interactions on the angular dependence of ferromagnetic resonance spectra in arrays of Fe/FexOy core/shell nanocubes. Eur. Phys. J. B 88, 165 (2015). https://doi.org/10.1140/epjb/e2015-60084-7

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  • DOI: https://doi.org/10.1140/epjb/e2015-60084-7

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