摘要
采用sol-gel工艺制备了(Ba0.5Sr0.5)TiO3(BST)-SiO2-B2O3系铁电玻璃陶瓷。对其显微结构进行了分析,并通过阻抗分析仪测试其介电温谱(–50^+100℃)。结果表明:SiO2-B2O3系BST铁电玻璃陶瓷的相结构为立方钙钛矿相,显微结构呈微晶结构,当BST相与玻璃相的摩尔比为4:1时,颗粒平均粒径为1.35μm。随着SiO2-B2O3玻璃相含量的增加,εr明显降低,同时居里峰宽化,tC向低温方向移动。
（Ba0.5Sr0.5）TiO3（BST）-SiO2-B2O3 ferroelectric glass-ceramics were prepared by sol-gel technology. The microstructures were analyzed and the permittivities as a function of temperature at different frequencies range from -50 ℃ to 100 ℃ were also tested by impedance analyzer. The results show that BST-SiO2-B2O3 ferroelectric glass-ceramics possess cubic perovskite phase and microcrystalline structure. The mean particle size is 1.35um when the mole ratio of BST phase to glass phase is 4：1. εr is significantly decreased, Curie peak is broadened and Curie temperature shifts to lower temperature with the increase of SiO2-B2O3 glass phase content.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2008年第11期15-17,24,共4页
Electronic Components And Materials
基金
江苏省自然科学基金资助项目(No.BK2005039)
江苏省高校自然科学研究计划资助项目(No.05KJB430127)
