a.k Moghadam - M.Sc. Student, Metallurgy and Materials Engineering
o Mirzaee - Associate Professor, Metallurgy and Materials Engineering, Faculty of Metallurgy and Materials Engineering, Semnan University, Semnan, Iran
h Shokrollahi - Associate Professor, Metallurgy and Materials Engineering, Electroceramic group, Department of Materials Science and Engineering, Shiraz University of Technology, Shiraz, Iran
s.a.n.h Lavasani - M.Sc. Student, Metallurgy and Materials Engineering, Faculty of Metallurgy and Materials Engineering, Semnan University,Semnan, Iran

BFO nanoparticles were successfully synthesized by reverse chemical co-precipitation method at room temperature. The pH value in this experiment was fixed on 8, 9, 10, 11 and 12. The aspreparedpowders, characterized by X-ray diffraction (XRD), field emission scanning electronmicroscope (FESEM) and Fourier transformed infrared spectroscopy (FT-IR). Kinetic of reactions increases with increasing pH value. The size of crystallites was 60-110 nm calculatedfrom Scherer equation. The micrographs of samples showed that morphological changing from nearly cubic to rod-like shape of particles.

Bi2Fe4O9, Co-precipitation, Morphological characterization