BYPT压电陶瓷的结构与介温特性研究

Structure and dielectric characterization of (1-x)BiYbO_(3-x)PbTiO_3 ceramics

采用传统固相反应法,制备了(1-x)BiYbO3-xPbTiO3(x=0.95、0.90、0.85、BYPTx)压电陶瓷。XRD衍射图谱分析表明,在烧结温度为1150℃保温时间为2h的条件下,BYPTx陶瓷为纯钙钛矿结构,并具有较大的四方畸变度,c/a约为1.06。XRD衍射图谱分析还表明BiYbO3与PbTiO3固溶度不超过15%。BYPTx陶瓷的介温曲线显示其居里温度高达Tc=580℃,但BYPTx陶瓷的压电性能较弱,d33≈20pC/N。

The （1-x）BiYbO3-xPbTiO3（x=95,90,85,BYPTx） ceramics were prepared by traditional solid state processing with solid metal oxides.XRD shown stable peroviskite phase with the solid solution limit is less than 15% （content of BY）.With the increasing of x,the tetragonality of BYPTx increased.BYPTx ceramics showed the weak piezoelectric coefficient d33 were 23pC/N,and the Curie temperature of BYPTx ceramics was 583℃.