Dielectric Properties of (Ba, Sr, Ca)TiO3 Ceramics for Tunable Microwave Devices

被引：0
|
作者：
Qin, Bing [1 ]
Jin, Dengren [1 ]
Cheng, Jinrong [1 ]
Meng, Zhongyan [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
来源：
2006 15th IEEE International Symposium on Applications of Ferroelectrics | 2007年
关键词：
BSCT ceramics; Dielectric properties; Tunability;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
(Ba(0.9-x)Sr(x)Ca(0.1))TiO(3) (x=0.25 similar to 0.5) and (Ba(0.6-y)Sr(0.4)Ca(y))TiO(3) (y=0.05 similar to 0.2) ceramics were fabricated by the mixed-oxide method. All BSCT specimens owned dense and homogeneous structure without the second phase. By comparing the properties of (Ba(0.9-x)Sr(x)Ca(0.1))TiO(3) and (Ba(0.6-y)Sr(0.4)Ca(y))TiO(3), we found that the influence of Ba/Sr ratio on Curie temperature is greater than that of Ba/Ca ratio. The increasing of Ca content could decrease the dielectric loss and dielectric constants, but it would decrease the tunability as well. (Ba(0.55)Sr(0.4)Ca(0.05))TiO(3) and (Ba(0.5)Sr(0.4)Ca(0.1))TiO(3) are expected to be the candidate materials for microwave tunable devices, whose tunability, dielectric constant and loss were 24.1%, 4300, 0.28% and 16.5%, 3200, 0.096% respectively.
引用
收藏
页码：371 / 374
页数：4
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