Spinel NixMn1-xFe2O4 samples were prepared by microwave irradiation technique.
XRD, FT-IR, EDX and SAED analysis confirmed the formation of spinel structure.
HR-SEM and HR-TEM images showed the particle like-morphology.
VSM hysteresis curve confirmed ferromagnetic behavior of the samples.
PCD efficiency is increased with increase in the Ni content.