Hydrothermal synthesis and characterization of monodisperse α-Fe2O3 nanoparticles

Abstract Monodisperse α-Fe 2 O 3 nanoparticles have been successfully prepared by hydrothermal synthetic route using FeCl 3 , CH 3 COONa as reagents and reacted at 200 °C for 12 h. The morphology and structure of products were characterized by powder X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The results showed that the α-Fe 2 O 3 nanoparticles were single-crystalline hexagonal structure and average diameters were about 80 nm. Magnetic properties have been detected by a vibrating sample magnetometer at room temperature. The nanoparticles exhibited a ferromagnetic behavior with the coercive force (Hc), saturation magnetization (Ms) and remanent magnetization (Mr) was 185.28 Oe and 0.494 emu/g, 0.077 emu/g.