(1-x)PST-xPZT弛豫铁电陶瓷阻抗谱的研究  

Study on the Complex Impedance Spectrum of (1-x)PST-xPZT Ferroelectric relaxor Ceramics

作　　者：蓝德均[1] 陈异[1] 陈强[1] 乐夕[1] 肖定全[1] 朱建国[1] 

机构地区：[1]四川大学材料科学系,成都610064

出　　处：《四川大学学报（自然科学版）》2005年第S1期385-388,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(60471044);教育部博士点基金(20020610014)

摘　　要：将具有良好热释电性的Pb(Sc0.5Ta0.5)O3(PST)与Pb(Zr0.52Ti0.48)O3(PZT)复合,制备出了具有钙钛矿结构的(1-x)PST-xPZT(PSTZT)驰豫铁电陶瓷.对极化后的PSTZT样品进行了小信号交流阻抗谱测试,发现PSTZT的交流阻抗谱主要由压电振子谐振圆和部分陶瓷晶粒晶界圆组成.从前者获得了PSTZT全部压电陶瓷参数,从后者推出了晶粒是电阻塞产生的主要原因.The relaxor ferroelectric ceramics (1-x)PST-xPZT(abbr. PSTZT) with perovskite structure were prepared through complexing Pb(Sc_ 0.5 Ta_ 0.5 )O_3(PST) with nice pyroelectricity and Pb(Zr_ 0.52 Ti_ 0.48 )O_3(PZT) solid solution. Poled sample was tested by complex impedance spectrum at weak signal. The complex impedance spectrum consists mainly of resonant cycle of piezoelectric resonance and a part of impedance cycle of grain and grain boundary. Through the former, all piezoelectric parameters of PSTZT cerami...

关 键 词：PSTZT 阻抗谱 晶粒 

分 类 号：TB34[一般工业技术—材料科学与工程]