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Specific loss power of epoxy composites with embedded magnetite particles

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Abstract

Results of experimental study of a heat production by systems of magnetite particles, immobilized in an epoxy composite and placed under the action of oscillating magnetic fields are presented. The samples, consisting of the particles with diameters 8.3, 16 and 180 nm were studied and the specific loss power (SLP) per 1 g of magnetic particles was evaluated as a function of their volume fraction in an epoxy composite, the frequency and the intensity (H\(_{0})\) of the applied magnetic field. It was shown that SLP increased with the volume fraction of magnetic particles in the composite due to the dipole–dipole interaction in concentrated magnetic dispersions. Unexpectedly, intensities of the heat productions in the composites with embedded batches of particles 16 and 180 nm in diameter were practically the same; the thermal effect increased with the applied field amplitude faster than \(\hbox {H}_{0}^{2}\).

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Acknowledgements

LI and AZ thank the Russian Fund of Fundamental Investigation, Grants 19-52-45001, 20-02-00022 and 21-52-12013 as well as the Program of the Ministry of Science and Education of Russian Federation, project FEUZ-2020-0051. IB appreciates financial support of RFBR Grant 20-48-66044.

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Authors and Affiliations

  1. Ural Federal University, Institute of Natural Sciences and Mathematics, 19 Mira Str., Yekaterinburg, 620002, Russian Federation

    A. P. Safronov, A. Yu. Zubarev, I. V. Beketov & L. Iskakova

  2. Institute of Electrophysics UB RAS, 106 Amundsen Str., Yekaterinburg, 620016, Russian Federation

    A. P. Safronov, A. D. Maximov & I. V. Beketov

  3. Mikheev Institute of Metal Physics of the Ural Branch of the Russian Academy of Sciences, Yekaterinburg, Russia

    A. Yu. Zubarev

Authors
  1. A. P. Safronov
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  2. A. Yu. Zubarev
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  3. A. D. Maximov
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  4. I. V. Beketov
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  5. L. Iskakova
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Corresponding author

Correspondence to A. Yu. Zubarev.

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Safronov, A.P., Zubarev, A.Y., Maximov, A.D. et al. Specific loss power of epoxy composites with embedded magnetite particles. Eur. Phys. J. Spec. Top. 231, 1181–1186 (2022). https://doi.org/10.1140/epjs/s11734-022-00520-x

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  • DOI: https://doi.org/10.1140/epjs/s11734-022-00520-x

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