Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 ceramics
Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3-LiNbO3 ceramics
复制标题
DOI：
10.1063/1.1813636
复制
发表时间：
2004-11-01
影响因子：
4
通讯作者：
Ohsato, H
中科院分区：
文献类型：
--
作者：
Guo, YP;Kakimoto, K;Ohsato, H
采用常规烧结工艺合成了（1-x）（Na_（0.5）K_（0.5））NbO_（3-x）LiNbO_（3）{[Li-x（Na_（0.5）K_（0.5））（1-x）] NbO_（3）}（x=0.04-0.20）无铅压电陶瓷。当x ≤ 0.05时，材料为钙钛矿结构的正交相，当x ≥ 0.07时，材料变为四方相，当x=0.08时，材料中开始出现四方钨青铜结构的K3 Li 2Nb 5 O 15相，并随着LiNbO 3含量的增加而占主导地位。在0.05的成分范围内发现了正交相和四方相之间的准同型相界
Lead-free piezoelectric ceramics (1-x)(Na0.5K0.5)NbO3-xLiNbO(3) {[Li-x(Na0.5K0.5)(1-x)]NbO3} (x=0.04-0.20) have been synthesized by an ordinary sintering technique. The materials with perovskite structure is orthorhombic phase at xless than or equal to0.05 and becomes tetragonal phase at xgreater than or equal to0.07, a phase K3Li2Nb5O15 with tetragonal tungsten bronze structure begins to appear at x=0.08 and becomes dominant with increasing the content of LiNbO3. A morphotropic phase boundary between orthorhombic and tetragonal phases is found in the composition range 0.05