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Negative Magnetoresistance Phenomenon in Diluted Granular Multilayers Co80Fe20(t)|Al2O3

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Abstract

Several complex theories explaining the phenomenon of negative magnetoresistance (NMR) are discussed, observed in insulating diluted granular multilayers Co80Fe20(t)|Al2O3. In fact, this investigation is re-analyzing the experimental measurements of Co80Fe20 with low nominal thickness t = 0.7 nm of granular layers obtained earlier. Two theories such as quantum interference model and localized magnetic moments model are confronted with experimental measurements in order to provide physical explanations to NMR phenomenon.

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Authors and Affiliations

  1. Laboratory of Energetic Engineering and Materials, Faculty of Sciences Ibn Tofail, Kenitra, Morocco

    A. El Oujdi & A. Echchelh

  2. MPAC Group, Faculty of Sciences, BP 8106, 80000, Agadir, Morocco

    A. El Kaaouachi & B. Ait Hammou

  3. Physics Department, Faculty of Sciences, 80000, Agadir, Morocco

    R. Tiskatine & S. Dlimi

Authors
  1. A. El Oujdi
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  2. A. El Kaaouachi
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  3. A. Echchelh
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  4. B. Ait Hammou
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  5. R. Tiskatine
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  6. S. Dlimi
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Correspondence to A. El Kaaouachi.

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El Oujdi, A., El Kaaouachi, A., Echchelh, A. et al. Negative Magnetoresistance Phenomenon in Diluted Granular Multilayers Co80Fe20(t)|Al2O3. Phys. Solid State 62, 885–890 (2020). https://doi.org/10.1134/S1063783420050212

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