Synthesis, thermo-analytical and IR spectral studies of hydrazinated mixed metal carboxylates: A single source precursor to nanosize mixed metal oxides

A series of hydrazinated mixed nickel manganese zinc ferrous hydrazine fumarate complexes were synthesized from aqueous mixed metal chloride solutions and sodium fumarate-hydrazine hydrate mixture. The detailed characterization was carried out by chemical analysis, infrared spectroscopy and isothermal mass loss studies. The hydrazine ligand in these complexes shows bidentate bridging nature while fumarate anion exhibit monodentate behavior. These complexes act as single source precursors for nanosize ferrites. Thermal decomposition of these precursors was studied upto 800 °C in static air using simultaneous TG/DTA. The thermal decomposition study indicates 3-step decomposition of these precursors into nanosize mixed metal oxides. The nanosize mixed metal oxides were then characterized by X-ray diffraction, transmission electron microscopy and infrared spectral studies.

► The hydrazinated nickel manganese zinc ferrous fumarate precursors were synthesized.
► The chemical and thermo-analytical studies confirm the formation of precursors.
► The TG/DTA studies of precursors show three-step decomposition to nanosize ferrites.
► The XRD studies indicate the formation of Ni0.5−xMnxZn0.5Fe2O4 (x = 0.0–0.5) ferrites.
► The Scherrer crystallite size was 19–28 nm while TEM shows particle size of 12–50 nm.