Ferrites; Citrate method; Low temperature processing; Magnetic properties; Microstructure
Magnetic properties such as Curie temperature, saturation magnetisation, hysteresis loop and permeability loss factor
of various compositions of NiZn ferrites prepared by the non-conventional citrate precursor method are reported. The optimum properties are obtained for samples sintered at 12003C. The significant advantages of this method of preparation are: (i) the low relative loss factor, tan, of the order of 10-4-10-5 in the frequency range 100 kHz to 8 MHz, depending upon the composition, (ii) reduction in the sintering temperature by atleast 1003C and (iii) reduction in the sintering time from more than 3 h for the conventional method to 1 h in the present method.