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：Chen, Xiaoming;陈小明

通信作者：Chen, XM[1]

机构：[1]Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China;[2]China West Normal Univ, Coll Chem & Engn, Nanchong, Peoples R China;[3]Sichuan Univ, Sch Mat Sci & Engn, Chengdu, Peoples R China

第一机构：贵州理工学院材料与冶金工程学院

通信机构：corresponding author), Guizhou Inst Technol, Sch Mat & Met Engn, Guiyang 550003, Peoples R China.|贵州理工学院材料与冶金工程学院;贵州理工学院;

年份：2019

卷号：551

期号：1

起止页码：32-39

外文期刊名：FERROELECTRICS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000506077700005)】；

基金：This work is supported by Natural Science Foundation of Guizhou Provincial Department of Education, China (Grant No. KY [2018]253) and college students of Guizhou Institute of Technology for innovation and entrepreneurship training program (Grant No. 2003007116111).

语种：英文

外文关键词：Ceramics; sintering; electrical characterization; diffusion

摘要：A kind of lead-free piezoelectric ceramic, Bi-0.5(Na0.825K0.175)(0.5)TiO3 + 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 epsilon(r) and loss tangent tan delta show a strong temperature and frequency-dependent behavior.