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Polyacrylonitrile-based FeCo/C nanocomposites: Preparation and magnetic properties

  • Physical Methods of Investigation
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Abstract

Metal–carbon nanocomposites that represent FeCo alloy nanoparticles uniformly distributed over the carbon matrix, were prepared by the IR pyrolysis of precursors comprising polyacrylonitrile (PAN), iron acetylacetonate, and cobalt acetate (the metal ratio in the precursors was Fe: Co = 1: 1, 3: 1). The composition of FeCo alloy nanoparticles satisfies the tailored ratio Fe: Co. The FeCo phase is formed at synthesis temperatures in the range 500–600°С; at T ≤ 500°С only FCC-Co-base solid solutions are observed. The nanocomposites prepared at T ≥ 600°С simultaneously contain FeCo intermetallic nanoparticles and an insignificant amount of a FCC-Co phase or a cobalt-base solid solution phase. The saturation magnetization of FeCo/C metal–carbon nanocomposites is determined by the mean nanoparticle size and the alloy composition, and ranges from 36 to 64 (A m2)/kg (when Fe: Co = 1: 1) and from 35 to 52 (A m2)/kg (when Fe: Co = 3: 1) at synthesis temperatures in the range 600–800°С.

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Authors and Affiliations

  1. National Research and Technology University MISiS, Moscow, Russia

    D. G. Muratov & L. V. Kozhitov

  2. Topchiev Institute for Petrochemical Synthesis, Russian Academy of Sciences, Moscow, Russia

    D. G. Muratov

  3. Tver State University, Tver, Russia

    A. V. Popkova

Authors
  1. D. G. Muratov
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  2. L. V. Kozhitov
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  3. A. V. Popkova
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Correspondence to D. G. Muratov.

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Original Russian Text © D.G. Muratov, L.V. Kozhitov, A.V. Popkova, 2016, published in Zhurnal Neorganicheskoi Khimii, 2016, Vol. 61, No. 10, pp. 1365–1374.

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Muratov, D.G., Kozhitov, L.V. & Popkova, A.V. Polyacrylonitrile-based FeCo/C nanocomposites: Preparation and magnetic properties. Russ. J. Inorg. Chem. 61, 1312–1320 (2016). https://doi.org/10.1134/S0036023616100168

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  • DOI: https://doi.org/10.1134/S0036023616100168

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