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Oxide layers with ferro- and ferrimagnetic characteristics formed on aluminum via plasma electrolytic oxidation

  • Photochemistry and Magnetochemistry
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Abstract

(Fe+Co)-containing oxide coatings are formed on aluminum alloy. It is established that at a temperature of ∼2 K, the coatings manifest ferromagnetic properties. The coatings, formed within 5 min, are characterized by an anomalously high coercive force H c = 1300 Oe. At room temperature (300 K), they manifest ferromagnetic properties, whereas in external fields of ∼30 kOe they tend to transition into the antiferromagnetic state. It is concluded that magnetism is in this case due to the presence in the coating’s pores of crystallites ∼50–100 nm in size that consist predominantly of reduced iron, cobalt, and aluminum.

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Authors and Affiliations

  1. Institute of Chemistry, Far Eastern Branch, Russian Academy of Sciences, Vladivostok, 690022, Russia

    V. S. Rudnev, V. P. Morozova, I. V. Lukiyanchuk, M. V. Adigamova, I. A. Tkachenko & A. Yu. Ustinov

  2. Far Eastern Federal University, Vladivostok, 690950, Russia

    V. S. Rudnev, A. Yu. Ustinov, P. V. Kharitonskii & A. M. Frolov

Authors
  1. V. S. Rudnev
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  2. V. P. Morozova
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  3. I. V. Lukiyanchuk
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  4. M. V. Adigamova
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  5. I. A. Tkachenko
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  6. A. Yu. Ustinov
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  7. P. V. Kharitonskii
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  8. A. M. Frolov
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Corresponding author

Correspondence to V. S. Rudnev.

Additional information

Original Russian Text © V.S. Rudnev, V.P. Morozova, I.V. Lukiyanchuk, M.V. Adigamova, I.A. Tkachenko, A.Yu. Ustinov, P.V. Kharitonskii, A.M. Frolov, 2013, published in Zhurnal Fizicheskoi Khimii, 2013, Vol. 87, No. 6, pp. 1065–1069.

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Rudnev, V.S., Morozova, V.P., Lukiyanchuk, I.V. et al. Oxide layers with ferro- and ferrimagnetic characteristics formed on aluminum via plasma electrolytic oxidation. Russ. J. Phys. Chem. 87, 1052–1056 (2013). https://doi.org/10.1134/S003602441306023X

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  • DOI: https://doi.org/10.1134/S003602441306023X

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