Phase structures and electrical properties of LiSbO3 doped 0.994K(0.5)Na(0.5)NbO(3)-0.004K(5.4)Cu(1.3)Ta(10)O(29)-0.002BiMnO(3) piezoelectric ceramics

作者：Hu, Yaobin^*; Liu, Xinyu; Jiang, Minhong; Zhang, Xiaowen

来源：Journal of Materials Science: Materials in Electronics , 2013, 24(1): 331-335.

DOI：10.1007/s10854-012-0750-5

• MICROSTRUCTURE
• MNO2

LiSbO3 (LS) doped 0.994K(0.5)Na(0.5)NbO(3)-0.004K(5.4)Cu(1.3)Ta(10)O(29)-0.002BiMnO(3) (KNN-KCT-BM) piezoelectric ceramics with excellent properties have been fabricated by conventional ceramic processing. It is found that the dopant of LS has considerable effect on the grain size, phase structure and electrical properties of KNN-KCT-BM ceramics. The KNN-KCT-BM ceramics doped with 4.5 mol% LS ceramics show good electrical properties such as d(33) = 208 pC/N, Q(m) = 95, k(p) = 40.5 %, T-c = 335 degrees C, To-t = 55 degrees C, epsilon(r) = 1,190 and rather low dielectric dissipation of tan delta = 1.25 % (1 kHz) and tan delta < 1 % (100 kHz). This indicates that 4.5 mol% LS-doped KNN-KCT-BM piezoceramic is an alternative lead-free piezoelectric material for the development of piezoelectric devices working at high temperature.

• 出版日期2013-1
• 单位中南大学; 桂林电子科技大学