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Evolution of the structural and magnetotransport properties of magnetite films depending on the temperature of their synthesis on the SiO2/Si(001) surface

Physics of Metals and Metallography volume 118, pages 644–651 (2017)Cite this article

Abstract

The methods of transmission and reflection electron diffraction have been used to investigate the structure of Fe3O4 films depending on the temperature of their synthesis on an Si substrate coated with an ultrathin layer of SiO2. The thus-grown polycrystalline films of magnetite had a texture, the axis of which was perpendicular to the surface of the SiO2 film. It has been revealed that, with an increase in the growth temperature, a structural rearrangement occurs which is characterized by an increase in the volume fraction of grains with the preferred (311) orientation. A study of the magnetotransport properties of the films has shown that the magnitude of their magnetoresistance increases with an increase in the temperature of their synthesis. It has been established that in the Fe3O4/SiO2/Si system with a tunneling-thin layer of SiO2 the magnetoresistance decreases as a result of the flow of an electric current through the silicon substrate.

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Authors and Affiliations

  1. Institute of the Automation and Control Processes, Far-East Branch, Russian Academy of Sciences, ul. Radio 5, Vladivostok, 690041, Russia

    V. V. Balashev, V. A. Vikulov, A. A. Dimitriev, T. A. Pisarenko & V. V. Korobtsov

  2. School of Natural Sciences, Far-Eastern Federal University, ul. Sukhanova 8, Vladivostok, 690950, Russia

    V. V. Balashev, A. A. Dimitriev, T. A. Pisarenko, E. V. Pustovalov & V. V. Korobtsov

Authors
  1. V. V. Balashev
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  2. V. A. Vikulov
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  3. A. A. Dimitriev
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  4. T. A. Pisarenko
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  5. E. V. Pustovalov
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  6. V. V. Korobtsov
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Correspondence to V. V. Balashev.

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Original Russian Text © V.V. Balashev, V.A. Vikulov, A.A. Dimitriev, T.A. Pisarenko, E.V. Pustovalov, V.V. Korobtsov, 2017, published in Fizika Metallov i Metallovedenie, 2017, Vol. 118, No. 7, pp. 679–685.

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Balashev, V.V., Vikulov, V.A., Dimitriev, A.A. et al. Evolution of the structural and magnetotransport properties of magnetite films depending on the temperature of their synthesis on the SiO2/Si(001) surface. Phys. Metals Metallogr. 118, 644–651 (2017). https://doi.org/10.1134/S0031918X17050027

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  • DOI: https://doi.org/10.1134/S0031918X17050027

Keywords

  • magnetite
  • texture
  • reflection high-energy electron diffraction (RHEED)
  • magnetoresistance