High dielectric constant in CaCu3Ti4O12 multiphased ceramics

被引：0
|
作者：
Lebey, T [1 ]
Guillemet, S [1 ]
Bley, V [1 ]
Boulos, M [1 ]
Durand, B [1 ]
机构：
[1] UPS, CNRS, Lab Genie Elect, Toulouse, France
来源：
Proceedings of the 2005 International Symposium on Electrical Insulating Materials, Vols, 1-3 | 2005年
关键词：
D O I：
10.1109/ISEIM.2005.193490
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
Different CCT powders containing several phases, CaCu3Ti4O12 (major phase), CaTiO3 and CuO are elaborated by a "soft chemistry" method. Three main types of sintered ceramics are realized: a monophased consisting of the pure CCT phase, a biphased (CCT + CaTiO3), and a three-phased (CCT + CaTiO3 + copper oxide (CuO or CUM). All of them present original dielectric properties. Values up to 8 105 at 1 kHz are obtained for the relative permittivity with relatively low losses. The origin of such huge permittivity values and the influence of the structure (presence of additional phases) on the dielectric properties of the ceramics are discussed.
引用
收藏
页码：784 / 787
页数：4
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