Dielectric Properties of CaTiO3 Doped Ba0.65Sro.35TiO3 (BST) AC High Voltage Capacitor Ceramics

摘要：

　　The dielectric properties of (1-x) Ba0.65Sr035TiO3-xCaTiO3 (x=0,0.03,0.06,0.10,0.15) ceramics were investigated.XRD analysis shows that CaTiO3 doping can be fully incorporated into the perovskite lattice of BST except increasing peak intensity.The experimental result shows that doping a certain amount of CaTiO3 could form fine crystal grain structure,enhance the density,and enhance Ac withstand voltage strength,increase dielectric constant and decrease the dielectric loss.While doping excessive CaTiO3 could make the geometrical distortion,increase the porosity and grain size,develop the internal stresses and finally lead to the dielectric constant decrease.The BSTC ceramics sintered at 1350 ℃ for 2 h with 6 mol.% CaTiO3 doping has the best properties,εr of 3862,tani of 0.046,Eb of 5 kV/mm (AC),the value of /C/C ranges is -26.7%-66.2% in-50 ℃ ~ 1 00 ℃ temperature range.

关键词： BST ceramic AC capacitor ceramics dielectric properties CaTiO3 doped

作者: Musheng Huang Xinyou Huang Chunhua Gao

作者单位: School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China;Jiangsu Provin School of Materials Science and Engineering,Jiangsu University,Zhenjiang 212013,China

会议类型: 国际会议

会议名称: 2013 2nd international Conference on Opto-Electronics Engineering and Materials Eesearch(2013第二届光电工程与材料研究国际会议)(OEMR2013)

会议地点: 郑州

会议语种:英文

页码: 48-52

在线出版日期: 2013-10-19（万方平台首次上网日期，不代表论文的发表时间）