From a practical viewpoint, the development of
simple, energy efficient and environment-friendly process to synthesize BiFeO3 with controllable morphology and homogeneous
chemical compositions under milder conditions, is still a challenging work.
Molten-salt synthesis (MSS) as a large scale, one-step, rapid,
and environmentally friendly method for preparing functional
materials, has received much attention. In the past decade it has
been widely used to synthesize perovskite ceramic oxide powders
such as Pb-based relaxors and Ba-based dielectric oxides [8,9].
However, up to date only a few works on the synthesis of
multiferroic BiFeO3 by MSS have been reported [10–13]. In the
present work, we report on the synthesis of BiFeO3 microcrystals
by a facile molten-salt technique with the mixture of NaCl–KCl as
molten salt, and the microstructures of BiFeO3 microcrystals are
characterized by X-ray diffraction (XRD), Raman scattering,
scanning electron microscopy (SEM), and energy-dispersive