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Changes in the Ferromagnetic Resonance Spectra and Magnetic Anisotropy of the [CoFeB/SiO2|Bi2Te3]47 Multilayer Heterostructures upon the Deposition of Fe/Fe3O4 Nanoparticles on Their Surface

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Abstract

An increase in the anisotropy constant of the [CoFeB/SiO2|Bi2Te3]47 heterostructure under the influence of magnetic Fe/Fe3O4 nanoparticles deposited on the surface of the heterostructure to 20 wt % is detected by ferromagnetic resonance. It is established that a layer of Fe/Fe3O4 nanoparticles with a thickness of about 27 nm on a diamagnetic GaAs substrate has its own magnetic anisotropy caused by the magnetic dipole interaction between the particles. A layer of nanoparticles bound by magnetic dipole interaction forms the equivalent magnetic film, the stray field of which changes the effective magnetic anisotropy of the [CoFeB/SiO2|Bi2Te3]47 heterostructure.

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Funding

This study was performed within the framework of thematic map AAAAA-A19-119092390079-8 for the Institute for Problems of Chemical Physics, Russian Academy of Sciences.

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Authors and Affiliations

  1. Institute for Problems of Chemical Physics, Russian Academy of Sciences, 142432, Chernogolovka, Moscow oblast, Russia

    A. I. Bezverkhnii & R. B. Morgunov

  2. Sechenov First Moscow State Medical University of the Ministry of Health of the Russian Federation, 119991, Moscow, Russia

    A. I. Bezverkhnii & R. B. Morgunov

Authors
  1. A. I. Bezverkhnii
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  2. R. B. Morgunov
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Correspondence to R. B. Morgunov.

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Translated by O. Kadkin

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Bezverkhnii, A.I., Morgunov, R.B. Changes in the Ferromagnetic Resonance Spectra and Magnetic Anisotropy of the [CoFeB/SiO2|Bi2Te3]47 Multilayer Heterostructures upon the Deposition of Fe/Fe3O4 Nanoparticles on Their Surface. Phys. Solid State 64, 179–184 (2022). https://doi.org/10.1134/S1063783422050018

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  • DOI: https://doi.org/10.1134/S1063783422050018

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