Low-Temperature Synthesis of NiFe2O4 by a Hydrothermal Method.

Nickel ferrite (NiFe2O4) nanoparticles were successfully synthesized via a hydrothermal process and characterized by X-ray diffraction and transmission electron microscope techniques. The effects of reaction temperature, holding time, and RH ratio (isopropyl alcohol/water) were discussed. The NiFe2O4 nanoparticles could be obtained at 60°C within 3 h. The crystallization of the spinel ferrites was promoted by the increase in reaction temperature, holding time, and RH ratio. [ABSTRACT FROM AUTHOR]