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Effect of additions of rare-earth element oxides on the properties of nickel ferrite

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Soviet Powder Metallurgy and Metal Ceramics Aims and scope

Conclusions

  1. 1.

    It has been shown by x-ray diffraction analysis that, in ferrites represented by the general formula NiRxFe2−xO4, where R is La, Ce, Pr, Nd, Sm, or Eu and x = 0.01–0.1, Fe3+ ions are replaced by Rn+ ions at degrees of substitution x ≤0.05.

  2. 2.

    As the value of x is raised to 0.03, the maximum magnetic permeability of the ferrites grows, which is due to the fact that the addition of small amounts of the rare-earth elements to nickel ferrite results in a larger and denser grain.

  3. 3.

    The electrical resistivity of the ferrites sharply falls in the presence of small amounts of the REE (up to 0.5 wt.%). The results obtained are explained within the framework of the zone model of the electrical conductivity of ferrites, with allowance for the effects of REE ions upon carrier concentration.

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Authors and Affiliations

  1. Kiev Engineering Institute, USSR

    L. A. Vermenko, T. Ya. Gridasova & E. N. Lukachina

Authors
  1. L. A. Vermenko
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  2. T. Ya. Gridasova
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  3. E. N. Lukachina
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Additional information

Translated from Poroshkovaya Metallurgiya, No. 9 (129), pp. 52–56, September, 1973.

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Vermenko, L.A., Gridasova, T.Y. & Lukachina, E.N. Effect of additions of rare-earth element oxides on the properties of nickel ferrite. Powder Metall Met Ceram 12, 732–735 (1973). https://doi.org/10.1007/BF00793983

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  • DOI: https://doi.org/10.1007/BF00793983

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