THERMAL VARIATIONS OF MAGNETIC PROPERTIES IN NICKEL SUBSTITUTED Cu-Zn FERRITE PREPARED BY OXALATE PRECURSOR ROUTE

Ni substituted Cu-Zn ferrites with chemical reaction having formula NixCu0.55-Zn Fe O (x = 0.0, 0.05, 0.10, 0.15, 0.20, 0.30, 0.40, 0.50) have been prepared by x 0.45 2 4oxalate precursor route. The crystal phase of Ni Cu Zn Fe O was characterized by x 0.55-x 0.45 2 4 X-ray powder diffraction analysis (XRD). Thermal variation of normalizedsusceptibility with temperature was studied by using AC susceptibility technique. The 0initial permeability as a function of temperature from room temperature to 450 C was measured at 1 KHz frequency