Combined effect of demagnetizing field and induced magnetic anisotropy on the magnetic properties of manganese-zinc ferrite composites

► Polyaniline (PANI) coating significantly changes magnetic properties of MnZn ferrite. ► Coated ferrite exhibits higher coercivity, thermomagnetic stability, and resonance frequency shifts. ► Changes are due to magnetic anisotropy induced through pinning of domain walls by PANI.