Piezoelectric and Ferroelectric Properties of (Bi0.5Na0.5)0.9Ba0.07Sr0.03TiO3 Lead-free Ceramics with MnO2 Doping

摘要：

The effect of a small amount MnO2 doping on the piezoelectric and ferroelectric properties of (Bi0.5Na0.5)0.9Ba0.07Sr0.03TiO3 (BNBST) Lead-free ceramics prepared by the conventional mixed oxide method was systematically investigated.At x=0.25,the MnO2-modified BNBST ceramics exhibit optimal piezoelectric and dielectric properties (d33=157pC/N,kp=33％,Qm=364,tanδ=2％,εr=843) and excellent ferroelectric properties composed by a higher remanent polarization Pr (Pr=25.9μC/cm2) and lower coercive field Ec (Ec=2.54kV/mm) at room temperature.Moreover,the two characteristic dielectric peaks can be observed in this ceramics.

关键词： Lead-free ceramics Piezoelectrics Ferroelectrics MnO2

作者: Qiyi Yin Ming Ding Changan Tian Jihai Cheng Yingying Zhou

作者单位: Department of Chemistry and Materials Engineering, Hefei University, Hefei 230022,PR China

会议类型: 国内会议

会议名称: 2012中国国际粉体技术与应用论坛暨全国粉体技术产品商贸交流会

会议地点: 合肥

会议语种:英文

页码: 51-54

在线出版日期: 2012-08-25（万方平台首次上网日期，不代表论文的发表时间）