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

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 3...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-11, Vol.1386 (1), p.12103
Main Authors: Lara, L A, Mancipe, D L, Pineda, Y, Moreno, J J, Peña-Rodríguez, G
Format: Article
Language:English
Subjects:
Circuit design
Dielectric loss
Factorial design
Magnetic fields
Magnetism
Magnetite
Mathematical analysis
Matrix methods
Metal sheets
Network analysis
Physics
Polyester resins
Transmission lines
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Summary: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.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1386/1/012103