Processing of HoFeO3 /Poly(EDOT-co-CIn) nanocomposite: Comprehensive analysis of the ku band absorption mechanism

Abstract

By mixing the magnetic nanoparticles with dielectric materials such as polymers, particularly co-polymers, the complex permittivity and permeability of HoFeO3 nanoparticles may be readily controlled. The major goal of this research is to improve HoFeO3 nanoparticles' microwave absorption characteristics in the ku-band frequency by coating them with two different polymers that were created as co-polymers with intriguing dielectric properties. HoFeO3 nanoparticles were made using the co-precipitation technique, and the electromagnetic properties of the particles after coating with Poly(EDOT-co-CIn) were investigated. By using natural ferromagnetic resonance, interfacial polarization that occurs between components as well as filler and matrix, hopping, and multiple reflections and scattering within the matrix, coating by co-polymers can successfully boost the impedance match of HoFeO3 and subsequently raise its microwave absorption efficacy. According to findings, the HoFeO3/Poly(EDOT-co-CIn) nanocomposite has a minimum reflection loss (RLmini) value of −35 dB at 15.7 GHz, a maximum effective absorption bandwidth (EAB) of 5 GHz, and a thin thickness of just 0.8 mm. The feasible development of core-shell-based microwave absorbers is made possible by this method.