氧化物掺杂Ba(Ti_(0.91)Zr_(0.09))O_3陶瓷的介电弛豫行为  

Ferroelectric Relaxor Behaviour of Ba(Ti_(0.91)Zr_(0.09))O_3 Ceramic Doped with Oxides

作　　者：陈涛[1] 丁士华[1] 宋天秀[1] 张红霞[1] 杨秀玲[1] 张东[1] 

机构地区：[1]西华大学材料科学与工程学院,成都四川610039

出　　处：《压电与声光》2009年第5期721-723,727,共4页Piezoelectrics & Acoustooptics

基　　金：四川省教育厅科技基金资助项目(2006C025);西华大学校人才基金资助项目(R0620109)

摘　　要：采用固相反应法分别制备了CuO、Bi2O3、MoO3和Li2O氧化物掺杂的Ba(Ti0.91Zr0.09)O3陶瓷。研究A位和B位施-受主掺杂对介电弛豫行为的影响。不同频率下陶瓷样品的介电温谱显示适量的掺杂可以诱发弛豫行为。根据A位和B位的替代离子类型,讨论了弛豫特性产生的机理。Ba（Ti0.91Zr0. 09 ） O3 ceramics doped with CuO, Bi2O3O3 , MoO3 and Li2O respectively was prepared by a solid phase reaction. The effect of A-site and B-site donor-acceptor doped on dielectric relaxor behaviour was investigated. The dielectric constants as a function of temperature at different frequencies show that relaxor behaviour was induced doped with moderation oxides, the corresponding relaxor characteristics were determined and discussed according to the A-site and B-site substituted cation type.

关 键 词：Ba(Ti0.91Zr0.09)O3陶瓷 弥散相变 介电弛豫 

分 类 号：TN104.2[电子电信—物理电子学] TM282[一般工业技术—材料科学与工程]