Synthesis carbon-encapsulated NiZn ferrite nanocomposites by in-situ starch coating route combined with hydrogen thermal reduction

Carbon-encapsulated NiZn ferrite magnetic nanocomposites were successfully synthesized by an inexpensive and environment-friendly method of in-situ starch coating route combined with hydrogen thermal reduction (Fig. 1). The nanocomposites were characterized and the experimental results were discussed. Under applied magnetic field, the nanocomposites exhibited the ferromagnetic behavior. The saturated magnetization (Ms) of carbon-encapsulated NiZn ferrite nanocomposites calcined at 400 °C can reach a high value up to 72.67 emu/g, and the saturated magnetization (Ms) decreases as the annealing temperature goes up.175