摘要
采用溶胶-凝胶法制备(Ba0.5Sr0.5)1-xCuxTiO3高介电性能陶瓷,用X射线衍射和LCR分析仪对不同x取值和烧结温度制备陶瓷的晶相组分和介电性能进行分析对比,结果表明,x=0.1可以得到比较好的固溶体;随着Cu2+比例上升,陶瓷中出现氧化铜杂相;并且,烧结温度升高,陶瓷中氧化铜相含量也增加。氧化铜相含量的增加使陶瓷的介电系数获得明显提升,可达104数量级,但与此同时,氧化铜相也使陶瓷的介电损耗有所增大。
（B0.5 Sr0.5）1-x Cux TiO3 （BSCT） ceramics with high dielectric properties were prepared by a sol- gel method. The phase structure and dielectric properties of BSCT ceramics with different x were analyzed by XRD and LCR analyzer in detail. The results show that a solid solution is obtained when x is less than 0.1. When x is more than0.1, CuO phase appears in ceramics with the increase of Cu^2＋ content. The increase of sintering temperature can enhance the CuO content in ceramics. The dielectric properties of ceramics are observably improved with a high CuO content. Dielectric constant of ceramics can reach 10^4. However, the dielectric loss also increases with the increase of Cu^2＋ content.
出处
《硅酸盐通报》
CAS
CSCD
北大核心
2013年第2期248-252,共5页
Bulletin of the Chinese Ceramic Society
基金
陕西省科技厅自然科学项目(SJ08-ZT04)资助项目
陕西省教育厅自然科学项目(08JK462)
关键词
钛酸铜锶钡
溶胶-凝胶法
介电性能
晶相结构
barium strontium copper titanate
sol-gel process
dielectric properties
phase structure
