文献类型：期刊文献

英文题名：Structure and dielectric relaxor behavior of Li-doped Bi(Na,K)TiO3-based piezoceramics

作者：Chen, Xiaoming Liao, Yunwen Xie, Yingsong Luo, Haiqi Zhu, Jianguo Xiao, Dingquan

第一作者：陈小明;Chen, Xiaoming

通信作者：Chen, Xiaoming

机构：[1] School of Materials and Metallurgical Engineering, Guizhou Institute of Technology, Guiyang, China; [2] College of Chemistry and Engineering, China West Normal University, Nanchong, China; [3] School of Material Science and Engineering, Sichuan University, Chengdu, China

第一机构：贵州理工学院材料与冶金工程学院

年份：2019

卷号：551

期号：1

起止页码：32-39

外文期刊名：Ferroelectrics

收录：EI(收录号：20195007808770);Scopus(收录号：2-s2.0-85076050290)

语种：英文

外文关键词：Bismuth compounds - Diffusion - Lithium - Piezoelectric ceramics - Sintering - Sodium compounds - Solid state reactions

摘要：A kind of lead-free piezoelectric ceramic, Bi0.5(Na0.825K0.175)0.5TiO3 + x wt% Li2CO3 (abbreviated to BNKTL-x, x = 0–10.0), was prepared by the conventional solid-state reaction process. Effects of Li on the structure and relaxor characteristics of BNKTL-x ceramics were investigated. The results show that the BNKTL-x ceramics become considerably dense at relatively low sintering temperature. The introduction of Li leads to the significant increase of tetragonality and the shift of the phase boundary.The phase transition temperature of the BNKTL-x ceramics are enhanced by Li doping. Meanwhile, the relative permittivity Εr and loss tangent tanδ show a strong temperature and frequency-dependent behavior. ? 2019, ? 2019 Taylor & Francis Group, LLC.