Abstract
Experimental data on transmission and reflection of millimeter-wavelength electromagnetic radiation for an artificial crystal are used to estimate nonuniformity of electromagnetic field inside the crystal and dependence of nonuniformity on magnetic field. Nanocomposite materials based on opal matrices with periodically spaced ferrimagnetic nickel–zinc ferrite spinel particles or ferromagnetic metal-cobalt particles serve as artificial crystals. The measurements are performed at frequencies ranging from 26 to 38 GHz in the presence of magnetic fields of up to 12 kOe. The calculations show a rapid decrease in the nonuniformity of electromagnetic field on a microscale under conditions for ferromagnetic resonance.
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ACKNOWLEDGMENTS
We are grateful to M.I. Samoilovich for preparation of artificial crystals.
Funding
This work was supported by the Russian Science Foundation (project no. 17-12-01002). The results of Section 3 were obtained in the framework of state Contract (project “Funktsiya” no. АААА-А19-119012990095-0).
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Translated by A. Chikishev
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Rinkevich, A.B., Perov, D.V. Resonance Changes of Nonuniformity of Electromagnetic Field in an Artificial Crystal with Ferromagnetic Particles. J. Commun. Technol. Electron. 66, 451–458 (2021). https://doi.org/10.1134/S1064226921040124
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DOI: https://doi.org/10.1134/S1064226921040124