Low-temperature synthesis of Bi2Fe4O9 nanoparticles via a hydrothermal method

Abstract

Bi 2 Fe 4 O 9 (BFO) nanoparticles were successfully synthesized by a hydrothermal method at a temperature as low as 100 °C. The as-prepared powders, characterized by X-ray diffraction (XRD), energy dispersive spectroscopy (EDS), transmission electron microscope (TEM) and physical property measurement system (PPMS), exhibited a pure BFO phase about 100 nm size with uniform sheet-like shape and exhibited an AF order at room temperature. It was found that high alkali concentration and alkali ion Na + played a key role in the formation of BFO nanoparticles at a low temperature of 100 °C.