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Uniaxial magnetic anisotropy of iron-silicide thin films ion synthesized in an external magnetic field

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Abstract

Fe3Si ferromagnetic thin films are synthesized by iron ion implantation into single-crystal Si(111) and Si(100) wafers. The ion dose dependence of the magnetic properties of the iron-silicide thin films is investigated in detail by the magnetooptical Kerr effect. Magnetically isotropic and anisotropic films are formed, depending on the ion-beam synthesis conditions. The film coercivity increases with implantation dose. According to the results of X-ray analysis, the magnetically isotropic samples with an average crystallite size of 20–30 nm exhibit higher crystlallinity as compared with the magnetically anisotropic films. The results obtained show that the magnetic properties of both the isotropic and anisotropic samples can be described within the random anisotropy model. It is established with increasing ion implantation dose that the magnetocrystalline anisotropy of randomly oriented crystallites compete with the induced uniaxial anisotropy, up to suppression of the latter.

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Authors and Affiliations

  1. Kazan Physical-Technical Institute, Kazan Scientific Center, Russian Academy of Sciences, Kazan, 420028, Russia

    A. V. Alekseev, G. G. Gumarov, D. A. Konovalov, V. Yu. Petukhov & V. I. Nuzhdin

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  1. A. V. Alekseev
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  2. G. G. Gumarov
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  3. D. A. Konovalov
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  4. V. Yu. Petukhov
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  5. V. I. Nuzhdin
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Correspondence to A. V. Alekseev.

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Original Russian Text © A.V. Alekseev, G.G. Gumarov, D.A. Konovalov, V.Yu. Petukhov, V.I. Nuzhdin, 2014, published in Poverkhnost’. Rentgenovskie, Sinkhrotronnye i Neitronnye Issledovaniya, 2014, No. 11, pp. 37–41.

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Alekseev, A.V., Gumarov, G.G., Konovalov, D.A. et al. Uniaxial magnetic anisotropy of iron-silicide thin films ion synthesized in an external magnetic field. J. Surf. Investig. 8, 1124–1127 (2014). https://doi.org/10.1134/S1027451014050036

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  • DOI: https://doi.org/10.1134/S1027451014050036

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