文献类型：期刊文献

英文题名：CaCu3Ti4O12 ceramics from basic co-precipitation (BCP) method: Fabrication and properties

作者：Lu, Junjie[1]; Wang, Deqiang[1]; Zhao, Chongjun[1]

机构：[1] Key Laboratory for Ultrafine Materials, East China University of Science and Technology, Ministry of Education, Shanghai 200237, China

年份：2011

卷号：509

期号：6

起止页码：3103

外文期刊名：Journal of Alloys and Compounds

收录：EI(收录号：20110313591309)

语种：英文

外文关键词：Sintering - Grain growth - Coprecipitation - Phase composition - Calcium compounds - Titanium compounds - Ceramic materials - Dielectric losses

摘要：High dielectric CaCu3Ti4O12 (CCTO) ceramics have been successfully prepared by a novel basic co-precipitation (BCP) method. Compared with the conventional solid-state and/or soft chemistry methods, the BCP method has many advantages such as relatively lower sintering temperature, shorter sintering time and lower costs. The XRD patterns confirm the formation of CCTO crystal phase in the as-prepared samples. Influences of initial ingredients and sintering condition on phase composition, microstructure and dielectric property have been investigated through series of trials. The correlation between the process of the grain growth and dielectric properties of final products has been explored. The final products exhibit the dielectric constants higher than 10,000 and the dielectric losses lower than 0.15 at 1 KHz. ? 2010 Elsevier B.V. All rights reserved.