Fabrication, magnetic and microwave absorbing properties of Ba₂Co₂Cr₂Fe₁₂O₂₂ hexagonal ferrites

We have investigated the magnetic and microwave absorbing behavior of Ba₂Co₂Cr₂Fe₁₂O₂₂ Nano Particles (NPs)/polyaniline (PANI) and polyacrylonitrile (PAN) nanocomposite materials. Particles showed phase purity and crystallinity in powder X ray diffraction (XRD) analysis. Temperature dependence of magnetic parameters was observed. Microwave absorbing showed very broad and high reflection loss. - Highlights: • Ba₂Co₂Cr₂Fe₁₂O₂₂ NPs were investigated magnetic and absorbing behavior. • VSM measurements of NPs were showed the existence of superparamagnetism with very small coercivity and soft ferrite materials. • Nanocomposites showed higher EM absorption frequency and wider absorption bandwidth.