Ni-Cu-Zn ferrites with general formula Ni<sub>0.5</sub>Zn<sub>0.5-x/2</sub>Cu<sub>x/2</sub>Fe<sub>2</sub>O<sub>4</sub> (with x = 0.3, 0.4, 0.5 and 0.6) have been synthesized using oxalate precursor method with different precursor reaction temperatures in the range 10℃ to 70℃. The Curie temperatures obtained using AC susceptibility measurements are found to be in the range 150℃ to 350℃, the measurements also show single domain structure for all the samples except few compositions obtained at 35℃ precursor reaction temperature, show a multi-domain behaviour. The saturation magnetization is found to be in the range 20 to 51 emu/gm, while the magnetic moment is found to be in the range 0.63 to 1.5 µB. The hysteresis losses were found to be maximum for the samples obtained at precursor reaction temperature of 35℃. The grain size is found to be in the range 0.4 to 2.0 µm.
KeywordsMagnetic MaterialsTemperature Of Chemical ReactionMagnetic SusceptibilityCurie Temperature
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