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Frequency Dependence of an Electromagnetic Absorption Coefficient in Magnetic Fluid

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Abstract

The samples of water-based magnetic fluid, which contain Fe3O4–SiO2 particles with a spherical shape and sizes less than 100 nm, have been obtained. The method based on using a transmission line has been applied to measure the electromagnetic absorption coefficient in the frequency range from 0.1 to 18.0 GHz using a measuring setup based on horn antennas and the cell based on a coplanar transmission line. It has been found that magnetic fluids can be used to produce electromagnetic shields and electromagnetic wave absorbers as well as means to carry out local hyperthermia at electromagnetic radiation frequencies higher than 7 GHz.

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Funding

The study was partially supported by the Russian Foundation for Basic Research, project no. 16-32-60010.

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Authors and Affiliations

  1. St. Petersburg Electrotechnical University, 197376, St. Petersburg, Russia

    K. G. Gareev, V. V. Luchinin, E. N. Sevost’yanov, I. O. Testov & O. A. Testov

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  1. K. G. Gareev
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  2. V. V. Luchinin
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  3. E. N. Sevost’yanov
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  4. I. O. Testov
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  5. O. A. Testov
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Correspondence to K. G. Gareev.

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Translated by M. Astrov

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Gareev, K.G., Luchinin, V.V., Sevost’yanov, E.N. et al. Frequency Dependence of an Electromagnetic Absorption Coefficient in Magnetic Fluid. Tech. Phys. 64, 893–896 (2019). https://doi.org/10.1134/S1063784219060069

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  • DOI: https://doi.org/10.1134/S1063784219060069

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