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Design and characterization of a magneto-dielectric composite in high frequency with aligned magnetite powders

Lara, L A, Mancipe, D L, Moreno Rubio, Jorge and Pena-Rodriguez, G 2019. Design and characterization of a magneto-dielectric composite in high frequency with aligned magnetite powders. Journal of Physics: Conference Series 1386 (1) , pp. 1-7. 10.1088/1742-6596/1386/1/012103

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A magneto-dielectric material composed of a polyester resin-based microstrip (P115A), copper sheets and magnetite powders was designed in concentrations of 10, 20 and 30% Wt and with filters of 200, 325 and 500. The particles were aligned vertically and horizontally during the curing process using 300 mT magnetic fields. From a complete factorial design of 33, 27 microstrip-type circuits of 4 mm width, 70 mm length and 0.93 mm thickness were manufactured, characterized by scanning electron microscopy and vector network analysis. The cross-matrix analysis determined an optimal circuit response from the magneto-dielectric material with a concentration of 20% magnetite and an average particle size of 21.48 μm in horizontal alignment to the applied magnetic field and to the transmission line, obtaining a relative dielectric constant of Er 3.88 with a low dielectric loss of 0.054, within an operating range of 150 KHz to 4 GHz.

Item Type: Article
Date Type: Published Online
Status: Published
Schools: Engineering
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Publisher: IOP Publishing: Conference Series
ISSN: 1742-6588
Funders: European Union’s Horizon 2020 Research and Innovation Programme through the Marie Skłodowska-Curie agreement under grant 793529
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Date of First Compliant Deposit: 28 January 2020
Date of Acceptance: 8 October 2019
Last Modified: 20 May 2021 01:31

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