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Effect of the microstructure on the properties of radio-absorbing nickel-zinc ferrites

  • Materials Science and Technology: Magnetic Materials
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Abstract

The main approaches and results concerning an increase in the efficiency of broadband radioabsorbing nickel-zinc ferrites are reported. Requirements to the microstructure that ensure the expansion of the radio-absorption frequency range to 30–830 MHz have been developed. The effect of dopants on the frequency dependence of the absorption of electromagnetic waves has been analyzed. The efficiency of the formation of the coarse-grain structure with grain boundary layers having a high dielectric constant has been confirmed. It has been found that both doping with bismuth oxide and the introduction of a coarse-grain fraction of the same composition into a batch before the sintering of the powder enhance the absorbing properties of the ferrites.

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Authors and Affiliations

  1. National Research University MISiS, Leninskii pr. 4, Moscow, 117936, Russia

    V. G. Kostishin, S. V. Podgornaya & A. T. Morchenko

  2. Kuznetsk Institute of Information and Management Technologies, Kuznetsk, Penza Region, 442530, Russia

    R. M. Vergazov & V. G. Andreev

  3. Emanuel Institute of Biochemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 117977, Russia

    S. B. Bibikov

Authors
  1. V. G. Kostishin
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  2. R. M. Vergazov
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  3. V. G. Andreev
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  4. S. B. Bibikov
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  5. S. V. Podgornaya
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  6. A. T. Morchenko
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Additional information

Original Russian Text © V.G. Kostishin, R.M. Vergazov, V.G. Andreev, S.B. Bibikov, S.V. Podgornaya, A.T. Morchenko, 2010, published in Izvestiya Vysshikh Uchebnykh Zavedenii. Materialy Elektronnoi Tekhniki, 2010, No. 4, pp. 18–21.

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Kostishin, V.G., Vergazov, R.M., Andreev, V.G. et al. Effect of the microstructure on the properties of radio-absorbing nickel-zinc ferrites. Russ Microelectron 40, 574–577 (2011). https://doi.org/10.1134/S1063739711080117

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  • DOI: https://doi.org/10.1134/S1063739711080117

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