BSYPTx压电陶瓷的结构与压电性能研究  

Structure and Characterization of BSYPTx Ceramics

作　　者：石维[1,2] 裴颖[1] 魏建帅[1] 陈强[1] 肖定全[1] 朱建国[1] 

机构地区：[1]四川大学材料科学与工程学院,四川成都610064 [2]铜仁学院物理系,贵州铜仁554300

出　　处：《压电与声光》2010年第6期1027-1029,1033,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(60471044)

摘　　要：采用传统固相反应法,制备了(1-x)(0.96BiScO3-0.04BiYbO3)-xPbTiO3(0.58≤x≤0.66,BSYPTx)压电陶瓷。XRD图谱分析表明,BSYPTx具有钙钛矿结构,BSYPTx陶瓷四方相到三方相的转变区域存在于x=0.64附近,即是该体系的准同型相界(MPB)。在相界附近,BSYPTx陶瓷具有较优良的压电性能:压电常数d33≈426 pC/N,机电耦合系数kp=0.52;介温曲线显示,BSYPTx陶瓷相界附近的居里温度TC=430℃。Yb3+的引入提高了BSPT陶瓷的电滞回线的矩形度,最大的剩余极化强度Pr=43μC/cm2。The（1-x）（0.96BiScO3-0.04BiYbO3）-xPbTiO3（0.58≤x≤0.66,BSYPTx） ceramics were prepared by traditional solid state processing with solid metal oxides.The X-ray diffractions showed that there is stable peroviskite phase in BSYPTx systems ceramics.The rhombohedral phase of BSYPTx ceramics transfer to tetragonal phase at x=0.64（MPB）.In the vicinity of MPB,BSYPTx ceramics exhibited excellent piezoelectric properties,piezoelectric coefficient d33≈426 pC/N,electromechanical coupling factor kp≈0.52.The εr-T dependence of BSYPTx ceramics is performed and its TC is 430 ℃ around MPB.Addition of Yb3＋ enhanced the ferroelectric properties of BSPT and the maximum remnant polarization Pr were 43 μC/cm2.

关 键 词：BSYPTx 高居里温度 压电陶瓷 

分 类 号：TN384[电子电信—物理电子学] TB331[一般工业技术—材料科学与工程]