Journal
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
Volume 108, Issue 3, Pages 859-863Publisher
SPRINGER
DOI: 10.1007/s10973-012-2392-5
Keywords
Nanoparticles; Spinel ferrite; Thermal analysis; Autocatalytic decomposition; Fumarato-hydrazinate precursor
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Nanoparticles of the spinel ferrite, Co0.6Ni0.4Fe2O4 have been synthesized by the precursor combustion technique. This synthetic route makes use of a novel precursor viz. metal fumarato hydrazinate which decomposes autocatalytically after ignition to yield nanosized spinel ferrite. The X-ray powder diffraction of the as prepared oxide confirms the formation of monophasic nanocrystalline cobalt nickel ferrite. The thermal decomposition of the precursor has been studied by isothermal, thermogravimetric and differential thermal analysis. The precursor has also been characterized by FTIR, and chemical analysis and its chemical composition has been fixed as Co0.6Ni0.4Fe2(C4H2O4)(3)center dot 6N(2)H(4). The Curie temperature of the as prepared oxide was determined by ac susceptibility measurements.
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