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Open AccessArticle

Investigation of AC-Measurements of Epoxy/Ferrite Composites

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Department of Technology of Electronics Materials, National University of Science and Technology “MISiS”, Leninskii av., Moscow 4119049, Russia
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Physics Department, Faculty of Science, Tanta University, Al-Geish st., Tanta 31527, Egypt
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Scientific and Educational Center “Nanotechnology”, South Ural State University, Lenin av. 76, Chelyabinsk 454080, Russia
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SSPA “Scientific and Practical Materials Research Centre of the NAS of Belarus”, P. Brovki Str. 19, 220072 Minsk, Belarus
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Department of Physics, Federal University of Ceara, Fortaleza, Ceara 60-455-970, Brazil
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Electronic Materials Research Laboratory, Key Laboratory of the Ministry of Education & International Center for Dielectric Research, School of Electronic Science and Engineering, Xi’an Jiaotong University, Xi’an 710049, China
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Department of Physics, Electronics and Space Science, Gujarat University, Gujarat, Ahmedabad 380009, India
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School of Electronics and Electrical Engineering, Lovely Professional University, Phagwara, Punjab 144411, India
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Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(3), 492; https://doi.org/10.3390/nano10030492
Received: 12 February 2020 / Revised: 26 February 2020 / Accepted: 4 March 2020 / Published: 9 March 2020
(This article belongs to the Special Issue Oxide Magnetics)
A pure ferrite and epoxy samples as well as the epoxy/ferrite composites with different 20 wt.%, 30 wt.%, 40 wt.%, and 50 wt.% weight ferrite contents have been prepared by the chemical co-precipitation method. AC-conductivity and dielectric properties such as the dielectric constant and dielectric loss of the prepared samples have been studied. The obtained results showed that the samples had a semiconductor behavior. The dielectric constant of the composites has been calculated theoretically using several models. For the composite sample that contains 20 wt.% of ferrites, these models give satisfactory compliance, while for the composite samples with a higher percentage of nanofillers, more than 30 wt.% theoretical results do not coincide with experimental data. The investigated polymer has very low conductivity, so this type of polymer can be useful for high-frequency applications, which can reduce the losses caused by eddy current. Thus, the prepared samples are promising materials for practical use as elements of microwave devices. View Full-Text
Keywords: ferrites; epoxy; nanoparticles; composites; ac-conductivity; dielectric constant; dielectric loss ferrites; epoxy; nanoparticles; composites; ac-conductivity; dielectric constant; dielectric loss
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Darwish, M.A.; Trukhanov, A.V.; Senatov, O.S.; Morchenko, A.T.; Saafan, S.A.; Astapovich, K.A.; Trukhanov, S.V.; Trukhanova, E.L.; Pilyushkin, A.A.; Sombra, A.S.B.; Zhou, D.; Jotania, R.B.; Singh, C. Investigation of AC-Measurements of Epoxy/Ferrite Composites. Nanomaterials 2020, 10, 492.

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