Abstract
The magnetic permeability of alsifer was restored from the frequency dependences of the dielectric and magnetic permeabilities of powder alsifer (AlSiFe alloy)–wax matrix composites. The permeabilities were measured using the coaxial line technique within a frequency range of 0.05–20 GHz. The effect of the concentration, shape, and size of powder particles on the microwave magnetic properties of composites was considered. A good agreement between the measurement results and the Maxwell–Garnett formula generalized with consideration for the particle shape, the percolation threshold, and the skin-effect was obtained. The found sizes of particles agreed with electron microscopy and granulometry data. Both the frequency and the ferromagnetic resonance line figure of merit (FOM) for lamellar particles proved to be higher than for spherical ones. Alsifer powders were shown to be promising fillers for radioabsorbing materials.
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Original Russian Text © S.N. Starostenko, K.N. Rozanov, A.O. Shiryaev, A.N. Lagar’kov, A.N. Shalygin, 2017, published in Fizika Tverdogo Tela, 2017, Vol. 59, No. 11, pp. 2183–2190.
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Starostenko, S.N., Rozanov, K.N., Shiryaev, A.O. et al. Estimation of the superhigh-frequency magnetic permeability of alsifer from the measured permeability of composites. Phys. Solid State 59, 2203–2210 (2017). https://doi.org/10.1134/S1063783417110282
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DOI: https://doi.org/10.1134/S1063783417110282