Very Low Loss Tangent and High Dielectric Permittivity in Pure-CaCu3Ti4O12 Ceramics Prepared by a Modified Sol-Gel Process

被引:126
作者
Vangchangyia, Somsack [1 ]
Swatsitang, Ekaphan [1 ,2 ]
Thongbai, Prasit [1 ,2 ]
Pinitsoontorn, Supree [1 ,2 ]
Yamwong, Teerapon [3 ]
Maensiri, Santi [4 ]
Amornkitbamrung, Vittaya [1 ,2 ]
Chindaprasirt, Prinya [5 ]
机构
[1] Khon Kaen Univ, Fac Sci, Mat Sci & Nanotechnol Program, Khon Kaen 40002, Thailand
[2] Khon Kaen Univ, Fac Sci, Dept Phys, Integrated Nanotechnol Res Ctr INRC, Khon Kaen 40002, Thailand
[3] Natl Met & Mat Technol Ctr MTEC, Pathum Thani 12120, Thailand
[4] Suranaree Univ, Inst Sci, Sch Phys, Nakhon Ratchasima 30000, Thailand
[5] Khon Kaen Univ, Dept Civil Engn, Sustainable Infrastruct Res & Dev Ctr, Khon Kaen 40002, Thailand
关键词
CACU3TI4O12; CERAMICS; BEHAVIOR;
D O I
10.1111/j.1551-2916.2012.05147.x
中图分类号
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
We present a simple strategy to achieve excellent dielectric and nonlinear currentvoltage properties for pureCaCu3Ti4O12 ceramics prepared by a modified solgel method with different calcining conditions. At 1kHz and room temperature, the best CCTO ceramic can exhibit a high dielectric constant (e') of 9516 with a very low dielectric loss, tan d 0.020. The minimum value of tan d is 0.018 at 2.5kHz with e' 9433. High breakdown field of 4032V/cm and nonlinear coefficient of 7.05 were obtained.
引用
收藏
页码:1497 / 1500
页数:4
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