Synthesis and Dielectric Property of Rare Earth and Alkaline Earth Ions Co-doped Barium Titanate Ceramics

被引：0

作者：

Zhang Yingying ^{[1
,2
]}

Qi Xiaoying ^{[1
]}

Ming, Zhang ^{[2
]}

Jian, Xue ^{[2
]}

Wang Zhiqiang ^{[1
]}

Xin, Zhao ^{[1
]}

Xu Zhuangzhi ^{[2
]}

Hai, Lin ^{[1
]}

机构：

[1] Dalian Polytech Univ, Dalian 116034, Peoples R China

[2] Liaoning Res Inst Light Ind, Shenyang 110036, Peoples R China

来源：

RARE METAL MATERIALS AND ENGINEERING | 2015年 / 44卷

关键词：

rare earth and alkaline earth ions co-doping; hydrothermal; barium titanate; dielectric property;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hydrothermal synthesized La2O3/CaO (La/Ca) co-doped BaTiO3 (BT) powders have been prepared. Transmission electron microscope clearly shows that particle morphology of the crystallized powders obtained is almost spherical-like and the average particle size of BT powders is derived to be 150 similar to 200 nm. X-ray diffraction pattern derives the hydrothermal synthesized La/Ca co-doped BT powders belong to tetragonal phase. The La/Ca co-doped BT powders were mixed with 5% PVA and the pellets were fabricated. Scanning electron microscope manifests that La/Ca co-doped BT ceramic is conducive to the sintering densification and improves dielectric property. Dielectric analysis indicates that the ceramic samples with 1:1 and 3:1 La/Ca ratios satisfies X7R specification, especially the sample with 1:1 La/Ca ratio which has favorable dielectric properties including high dielectric constant (3798), low dielectric loss (0.0189) and high insulation resistance (2.7x10(12) Omega) holds prospects in developing practical ceramic capacitors.

引用

页码：149 / 152

页数：4

共 12 条

[11]

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Wang, J ;

Tang, XG ;

Wang, Y ;

Chan, HLW ;

Choy, CL ;

Li, XG .

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