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Ferrite Ni0,5Zn0,5Fe2O4 Synthesized by Combustion Reaction in a Microwave Oven Using Urea and Glycine as Fuel: Influence of Power

This paper reports the preparation of ferrite Ni0,5Zn0,5Fe2O4 by combustion reaction in a microwave oven, and its structural, morphological and magnetic characterization. The influence of microwave power and the fuel type was investigated. The samples were characterized by: XRD, BET, SEM and AGM. The results showed the formation of phase ferrite Ni0, 5Zn0,5Fe2O4 in all conditions evaluated. The presence of secondary phase hematite and nickel were observed only in samples with glycine. The microwave oven power and the fuel type altered the structure, morphology and magnetic behavior of the samples. In general, the samples synthesized with urea are promising for applications in catalysis, ferrofluids, magnetic sensors and the samples synthesized with glycine are promising for use as absorber electromagnetic radiation, due to the large particle size and good magnetic characteristics observed.