较为宽松条件下水热合成铁酸铋粉体

Hydrothermal Synthesis of BiFeO_3 Powders under Loose Conditions

BiFeO3是一种典型的单相磁电材料，室温下同时具有两种结构有序，即铁电有序倨里温度Tc=1100K）和G型反铁磁有序（尼尔温度Tn=650K），是少数同时具有铁电性和铁磁性的材料之一^[1-5]，可以广泛应用于收音机、电视机、微波、通讯卫星、块状器件、磁泡器等领域，

Bismuth ferrite（BiFeO3） powders were hydrothermally synthesized by using FeCl3·6H2O and BiCl3 as staring materials, NaOH as a mineralizer and NH4Cl as an additive. The results show that pure BiFeO3 powders can be synthesized under loose hydrothermal conditions of reaction temperature ranging from 140 to 230℃ and NaOH concentration ranging from 2 mol·L^-1 to 5 mol·L^-1. Moreover, the morphologies of the products can he controlled by changing the hydrothermal conditions.