Microwave absorbing properties based on polyaniline/magnetic nanocomposite powders

Abstract

Polyaniline/(1 − x)BaFe₁₂O₁₉/CaFe₂O₄/xCoFe₂O₄ nanocomposite powders were successfully prepared by an in situ polymerization method. The phase composition, morphology and electromagnetic properties of the nanocomposites were characterized by various instruments. The experimental results show that the polyaniline/(1 − x)BaFe₁₂O₁₉/CaFe₂O₄/xCoFe₂O₄ magnetic nanocomposites exhibit obviously enhanced microwave absorption performance in comparison with the single polyaniline/(1 − x)BaFe₁₂O₁₉/CaFe₂O₄/xCoFe₂O₄ and PANI/CoFe₂O₄ nanocomposites and the minimum reflection loss is −39.5 dB at 7.9 GHz with a thickness of 4 mm.