Rapid Synthesis of Multiferroic BiFeO₃ Single-Crystalline Nanostructures

Synthesis and dielectric properties of BiFeO3 derived from molten salt method

“…As temperature is beyond a certain value, it easily decomposes into Bi 2 Fe 4 O 9 and Bi 25 FeO 39 phases. So the intensities of Bi 2 Fe 4 O 9 and Bi 25 FeO 39 phases become stronger when the calcining temperature arises, which may be the reason pure BiFeO 3 phase could not be obtained using the LiCl, NaCl, KCl and their combined salts, as previously reported by Chen et al [15]. This indicates that their calcining temperature, above 800°C, may be higher than the decomposed temperature of BiFeO 3 phase.…”

“…Much effort has been conducted to synthesize BFO pure phase. Some effective routes such as hydrothermal [9][10][11], sol-gel [12,13], polymerized complex [14] and molten salt [15,16] are employed to synthesis the pure phase BFO powder. From the procedure and cost, the molten salt method is relative simple in these methods.…”

“…From the procedure and cost, the molten salt method is relative simple in these methods. Chen et al [15] and He et al [16] have synthesized pure BiFeO 3 in NaCl-Na 2 SO 4 and KNO 3 -NaNO 3 complex molten flux. Chen and co-workers [15] have reported the narrow synthesis temperature is as high as 800°C, which is close to decomposition temperature of BFO.…”

“…Chen et al [15] and He et al [16] have synthesized pure BiFeO 3 in NaCl-Na 2 SO 4 and KNO 3 -NaNO 3 complex molten flux. Chen and co-workers [15] have reported the narrow synthesis temperature is as high as 800°C, which is close to decomposition temperature of BFO. The synthesis temperature reported by He et al [16] is as low as 550°C.…”

Topochemical Synthesis of Micron‐Platelet (Na0.5K0.5)NbO3 Particles

“…[14,15] When the MSS route is introduced to the reaction system the topochemical synthesis is a simple and large-scale approach with relatively low temperatures and short times. [16] At present, we describe a large-scale method to synthesize the platelet (Na 0.5 K 0.5 )-NbO 3 particles derived from K 4 Nb 6 O 17 by a topochemical micro-crystal conversion method in molten salt KCl. The structure and morphology of (Na, K)NbO 3 were characterized by X-ray diffraction patterns (XRD), scanning electron microscopy (SEM), and differential scanning calorimetry (DSC) methods.…”