Structural and dielectric tunable properties of Ba_(0.4)Sr_(0.6)Ti_(1-y)Si_yO_3 microwave ceramics

作     者：ZHANG JingJi ZHAI JiWei WANG JiangYing 

作者机构：College of Materials Science and EngineeringChina Jiliang UniversityHangzhou 310018China Functional Materials Research LaboratoryTongji UniversityShanghai 200092China 

出 版 物：《Science China(Technological Sciences)》 (中国科学（技术科学英文版）)

年 卷 期：2012年第55卷第3期

页      面：610-615页

核心收录：

学科分类：080903[工学-微电子学与固体电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Basic Research Program of China ("973" Project) (Grant No. 2009CB623302) 

主　　题：BST ceramics tunable property microwave dielectric properties 

摘      要：The structure-property relationships in Ba0.4Sr0.6Ti1-ySiyO3 with y=0.00,0.01,0.02,0.05,0.10 and 0.20 ceramics have been studied by using X-ray diffraction,electron microscopy and dielectric *** increase of Si concentration is not favorable for the stability of the perovskite structure,which results in the formation of BaTiSiO5 secondary *** dielectric peaks of samples are suppressed,broadened and shifted to low temperature with increasing Si *** and Q value are reduced gradually with increasing Si concentration,due to growing of second BaTiSiO5 *** tunability(T) still remains ～18.0% under 60 kV/cm biasing for the samples with *** best combination of microwave dielectric properties are obtained for the composition of y=0.10:-=531,Q=391(at 1.610 GHz) and T=17.7%.