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Properties of CoPt ferromagnetic layers for application in spin light-emitting diodes

  • Surface Physics and Thin Films
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Abstract

The magnetic properties of Co45Pt55 films deposited by electron-beam evaporation in vacuum have been studied. The measurements of the Faraday and Kerr magnetooptical effects confirm the presence of the easy-magnetization axis perpendicular to the Co45Pt55 surface. It is shown that the perpendicular magnetic anisotropy and the residual magnetization are retained at 300 K for a long time. The magnetic characteristics of the Co45Pt55 layer surface have been studied by magnetic force microscopy, and “circular” mobile magnetic structures have been detected. The spin light-emitting diodes based on In(Ga)As/GaAs heteronanostructures with Co45Pt55 contact layers were fabricated. These diodes emit circularly-polarized light in the absence of an external magnetic field.

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Authors and Affiliations

  1. Physical Technical Research Institute, Lobachevsky State University of Nizhny Novgorod, pr. Gagarina 23/3, Nizhny Novgorod, 603950, Russia

    A. V. Zdoroveyshchev, M. V. Dorokhin, O. V. Vikhrova, P. B. Demina & A. V. Kudrin

  2. Fryazino Branch, Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, pl. Vvedenskogo 1, Fryazino, Moscow oblast, 141190, Russia

    A. G. Temiryazev & M. P. Temiryazeva

Authors
  1. A. V. Zdoroveyshchev
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  2. M. V. Dorokhin
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  3. O. V. Vikhrova
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  4. P. B. Demina
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  5. A. V. Kudrin
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  6. A. G. Temiryazev
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  7. M. P. Temiryazeva
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Corresponding author

Correspondence to A. V. Zdoroveyshchev.

Additional information

Original Russian Text © A.V. Zdoroveyshchev, M.V. Dorokhin, O.V. Vikhrova, P.B. Demina, A.V. Kudrin, A.G. Temiryazev, M.P. Temiryazeva, 2016, published in Fizika Tverdogo Tela, 2016, Vol. 58, No. 11, pp. 2186–2189.

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Zdoroveyshchev, A.V., Dorokhin, M.V., Vikhrova, O.V. et al. Properties of CoPt ferromagnetic layers for application in spin light-emitting diodes. Phys. Solid State 58, 2267–2270 (2016). https://doi.org/10.1134/S1063783416110391

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  • DOI: https://doi.org/10.1134/S1063783416110391

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