Radar absorbing properties of polyvinyl alcohol/Ni-Zn ferrite-spinel composite
Kostishyn V.G.1, Isaev I.M.1, Shakirzyanov R.I.1, Salogub D. V.1, Kayumova A.R.1, Olitsky V.K.1
1National University of Science and Technology MISiS, Moscow, Russia
Email: drvgkostishyn@mail.ru

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The electromagnetic and radio-absorbing characteristics of ferrite-polymer composites with conductive inclusions based on polyvinyl alcohol are investigated. The Ni-Zn spinel ferrite powder of 2000NN grade with composition Ni0.32Zn0.68Fe2O4 was used as filler. It is shown that the obtained composites are effective absorbers in the frequency range of 2-5 GHz with peak reflection loss less than ~20 dB. Through the analysis of the permittivity spectra and permeability spectra, as well as the calculated reflection loss spectra, critical factors of the electromagnetic wave absorption in obtained composites are established. Keywords: polymer composite, radio absorption, nickel-zinc ferrite, polyvinyl alcohol
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