Magnetic and Dielectric Properties of Epoxy Composites Reinforced with Hybrid Nanoparticle iron oxide (Fe₃O₄) and nickel (Ni)

Abstract

In this research, the effects of hybrid nanoparticles Fe3O4+Ni on the magnetic and dielectric properties of epoxy resin are investigated. Microstructural characterization was performed by Field Emission scanning electron microscopy FESEM, X-ray diffraction spectra XRD, and Fourier-transform infrared spectroscopy (FTIR). The magnetic properties were investigated by vibrating sample magnetometer (VSM) and the dielectric response was investigated by a precision impedance analyzer (Agilent 4294A) LCR meter at room temperature with different frequencies. The study dealing with hybrid nanocomposite (epoxy/Fe3O4+Ni) consisting of epoxy resin as the matrix material reinforcing by magnetite nanoparticles (Fe3O4) with different weight percentages (3wt.%, 6wt.%, 9wt.%, 12wt.%, 15wt. %) and constant weight percentage 2wt% of nickel (Ni) nanoparticles. The samples were prepared using the casting method. The epoxy with the hardener is weighted and mixing in a 2:1 ratio and then add reinforcement materials Fe3O4+Ni into the epoxy. Microstructural analysis showed that a uniform distribution and homogeneously dispersed in the epoxy matrix. The results of this work exhibit that the Increasing additive weight percentages of Fe3O4 nanoparticles with a constant weight of Ni nanoparticles into epoxy resin led to improvement in the magnetic and electric properties of hybrid nanocomposites compared with pure epoxy.

Structural, morphological, and dielectric properties of poly(vinylidene fluoride)/(Bi0.5Ba0.25Sr0.25) (La0.5Ti0.5) O3 composites

“…Therefore, it is regarded as a suitable polymer for insulations and binding materials due to several of its distinct features, including amazing thermal and chemical stability, excellent relative permittivity, light weight, flexibility, and low density 3 . PVDF, which has the molecular formula (CH 2 CF 2 ) n , can be cast in a variety of polymorphs, including polar β, γ, δ, and nonpolar α‐phases 4,5 . The degree of intensity of the β‐phase predominantly controls the pyro‐, piezo‐, and ferroelectric activity in PVDF, so from the various phases α and β‐phase are interesting to study 6…”