Electrical Capacitors Based on Silicone Oil and Iron Oxide Microfibers: Effects of the Magnetic Field on the Electrical Susceptance and Conductance
Ioan Bica, Eugen Mircea Anitas, Gabriela Eugenia Iacobescu
TL;DR
This paper explores how magnetic fields affect capacitors made with silicone oil and iron oxide microfibers, showing how these materials can be optimized for electronic applications.
Contribution
The novel contribution is the investigation of magnetodielectric capacitors with iron oxide microfibers and their response to magnetic fields.
Findings
Capacitor electrical properties depend on microfiber concentration and magnetic field strength.
Temporal stability of capacitor characteristics was confirmed through repeated measurements.
A dipolar model successfully explains the observed electrical behavior.
Abstract
This paper presents the fabrication and characterization of plane capacitors utilizing magnetodielectric materials composed of magnetizable microfibers dispersed within a silicone oil matrix. The microfibers, with a mean diameter of about 0.94 μm, comprise hematite (α-Fe2O3), maghemite (γ-Fe2O3), and magnetite (Fe3O4). This study investigates the electrical behavior of these capacitors under the influence of an external magnetic field superimposed on a medium-frequency alternating electric field, across four distinct volume concentrations of microfibers. Electrical capacitance and resistance measurements were conducted every second over a 60-s interval, revealing significant dependencies on both the quantity of magnetizable phase and the applied magnetic flux density. Furthermore, the temporal stability of the capacitors’ characteristics is demonstrated. The obtained data are analyzed…
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Taxonomy
TopicsAdvanced Sensor and Energy Harvesting Materials · Dielectric materials and actuators · Conducting polymers and applications