Abstract
Fe3O4/epoxy nanocomposites were manufactured and studied. Structural, morphological, thermomechanical and dielectric characterization was conducted via X-Ray Diffraction, Scanning Electron Microscopy, Differential Scanning Calorimetry, Dynamic Mechanical Analysis, and Broadband Dielectric Spectroscopy. Nanocomposites’ magnetic behaviour was obtained by a Superconducting Quantum Interference Device and their ability to store/harvest energy was investigated by DC charge/discharge tests. Data imply that the incorporation of the nanoparticles has an augmenting influence on the thermomechanical, dielectric and magnetic properties of the systems. Dielectric relaxations recorded in all systems are attributed to interfacial polarization, glass to rubber transition of the polymer matrix, and re-orientation of polar side groups of the polymer chain. Magnetic measurements confirmed the ferrimagnetic nature of the nanocomposites, while induced magnetic properties enhance with filler content. Stored and harvested energies increase with the applied DC field and the coefficient of energy efficiency increases in general with filler content.
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