Abstract
A method of formation of three-dimensional arrays of magnetically controlled particles from iron oxide Fe3O4 using a rotating permanent magnetic field is developed to create a material that absorbs electromagnetic radiation in the microwave range. The use of laboratory setup with a rotating magnetic field of permanent magnets makes it possible to obtain a composite with a close packing of particles, in which the principle of self-organization of monolayers of magnetic particles is realized. The reflection spectra, absorption spectra, and attenuation spectra of the electromagnetic radiation of composites with a three-dimensional array of close-packed magnetic particles of Fe3O4 with a thickness of 3 mm and 6 mm consisting of 15 and 30 flat monolayers of particles, respectively, are obtained. The technique for three-dimensional arrays of magnetic particles of Fe3O4 and the laboratory setup for its implementation are promising to produce composite materials using a wide range of microparticles and nanoparticles.
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This work was supported by the Russian Foundation for Basic Research, project no. 18-38-00448.
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Translated by I. Obrezanova
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Shorstkii, I.A., Yakovlev, N. Method of Absorbing Material Formation Based on Magnetically Controlled Particles of Fe3O4 . Inorg. Mater. Appl. Res. 11, 1236–1243 (2020). https://doi.org/10.1134/S2075113320050317
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DOI: https://doi.org/10.1134/S2075113320050317