Self-assembly growth of flower-like BiFeO_3 powders at low temperature

摘要

In this work, flower-like BiFeO_3 powders were synthesized by a hydrothermal method at low temperature. The effects of mineralizer, reaction temperature and soak time on the crystal phase structure and morphology of the BiFeO_3 powders have been investigated. Perovskite BiFeO_3 powders were obtained as the concentration of KOH is 1-6 mol/L. The SEM images of BiFeO_3 powders which synthesized at 150 ℃ for 1 h with 2 mol/L KOH exhibit cubic morphology. Whereas, the powders prepared for 6 h show flower-like morphology.