Ferroelectric and Magnetic Properties of Co Doping Bi6Fe2Ti3O18 Ceramics

摘要：

　　In this paper,for the purpose of enhancement in the magnetic behavior,the five-layer Aurivillius phase structure Bi6Fe2-xCoxTi3O18 (BFCT-x,x = 0.0 ~ 2.0) ceramics were synthesized using the solid-state reaction method from a mixture of Bi2O3,Co2O3,Fe2O3,and TiO2 powders with different stoichiometric ratio.The microstructure,ferromagnetic and ferroelectric properties are investigated.The crystallographic structures of BFCT-x are determined to be the typical five-layer Aurivillius phase with a suggested structural transformation at heavy doping of Co ions.At room temperature,the remnant magnetization (2Mr) of BFCT-0.0,BFCT-0.6,BFCT-1.0 and BFCT-2.0 samples are 0.043 memu/g,0.59 emu/g,0.81 emu/g and 1.75 memu/g,respectively.The 2Mr,at first,gradually enhance and reach a greatest value of 0.81 emu/g at x = 1.0 then degrade again with the increasing of the ratio x.At room temperature,the samples have ferroelectricity,which the remnant polarization (2Pr) of the BFCT-0.0,BFCT-0.6,BFCT-1.0 and BFCT-2.0 samples are 2.8 μC/cm2,8.0 μC/cm2,3.0 μC/cm2 and 7.2 μC/cm2 respectively.The 2Pr first increases,then decreases and increases again with Co doping.When x = 0.6,the 2Pr reaches a maximum value of 8.0 μC/cm2.

关键词： Ceramic Aurivillius phase Ferroelectric Ferromagnetic

作者: Chunyan Chen Song Hou Xiangyu Mao Xiaobing Chen

作者单位: College of Physics Science and Technology, Yangzhou University, Yangzhou 225002, China

会议类型: 国际会议

会议名称: the Chinese Materials Congress 2012(2012年中国材料大会(CMC2012))

会议地点: 太原

会议语种:英文

页码: 142-145

在线出版日期: 2012-07-13（万方平台首次上网日期，不代表论文的发表时间）