Preparation of BiFeO3 solution and its movement effects controlled by electrical field

• 作 者: LOU Jianyong JIANG Xingsheng XU Tiejun LIANG Deliang JIAO Fangjun GAO Lin
• 机 构: State Key Laboratory of Electrical Insulation and Power Equipment, Xi ’an Jiaotong University, Xi ’a
• 出 处: 稀有金属（英文版）
• 发表日期: 2012年5期
• 关键词: BiFeO3 solution movement property nanoparticle multi-ferroic material

This paper demonstrated our discovery of the movement effect of BiFeO3 nanoparticles in solution by strong electrical polarization.First,BiFeO3 nanoparticles were prepared by ball milling and characterized by SEM.Then,the preparation of BiFeO3 solution was finished.BiFeO3 nanoparticles are found to move in solution due to electrical field.The movement velocity ofBiFeO3 nanoparticles,which is about 10 μm·s-1,is influenced and controlled by the applied electrical field.The concentration of BiFeO3 solution and the nanoparticle sizes also have effects on its movement properties.The movement of BiFeO3 nanoparticles in solution is induced by strong polarization,and BiFeO3 nanoparticles have net negative electric charges because of the electrostatic force between BiFeO3 nanoparticles and the negative ions in water resolver.