Lead-free piezoelectric ceramics derived from the K0.5Na0.5NbO3–AgNbO3 solid solution system

作者: Chao Lei , Zuo-Guang Ye

DOI: 10.1063/1.2956410

关键词:

摘要: A lead-free solid solution between potassium sodium niobate and silver niobate, (1−x)K0.5Na0.5NbO3–xAgNbO3 (KNN-AN, with x=0–0.36), has been prepared in the form of ceramics by state reaction under O2 atmosphere. The crystal chemical study shows that Ag+ ion diffuses into KNN lattices to a perovskite structure x up 0.30. substitution for (K0.5Na0.5)+ results linear decreases ferroelectric Curie temperature (TC), from 420°C down 325°C 0.70KNN-0.30AN, tetragonal orthorhombic phase transition (TT-O), 190 150°C. relative density KNN-AN reaches 94%. optimum piezoelectric properties are found 0.82KNN-0.18AN, piezocoefficient d33=186pC∕N, an electromechanical coupling factor kp=42.5%, TC=355°C. For x=0.24, remanent polarization maximum value Pr=20μC∕cm2, reduced coercive field Ec=6.4kV∕cm T...

参考文章(19)
Yejing Dai, Xiaowen Zhang, Guoyuan Zhou, Phase transitional behavior in K0.5Na0.5NbO3–LiTaO3 ceramics Applied Physics Letters. ,vol. 90, pp. 262903- ,(2007) , 10.1063/1.2751607
Guo-Zhong Zang, Jin-Feng Wang, Hong-Cun Chen, Wen-Bin Su, Chun-Ming Wang, Peng Qi, Bao-Quan Ming, Juan Du, Li-Mei Zheng, Shujun Zhang, Thomas R. Shrout, Perovskite (Na0.5K0.5)1−x(LiSb)xNb1−xO3 lead-free piezoceramics Applied Physics Letters. ,vol. 88, pp. 212908- ,(2006) , 10.1063/1.2206554
E. K. Akdoğan, K. Kerman, M. Abazari, A. Safari, Origin of high piezoelectric activity in ferroelectric (K0.44Na0.52Li0.04)−(Nb0.84Ta0.1Sb0.06)O3 ceramics Applied Physics Letters. ,vol. 92, pp. 112908- ,(2008) , 10.1063/1.2897033
Yiping Guo, Ken-ichi Kakimoto, Hitoshi Ohsato, Phase transitional behavior and piezoelectric properties of (Na0.5K0.5)NbO3–LiNbO3 ceramics Applied Physics Letters. ,vol. 85, pp. 4121- 4123 ,(2004) , 10.1063/1.1813636
Yiping Guo, Ken-ichi Kakimoto, Hitoshi Ohsato, Structure and Electrical Properties of Lead-Free (Na0.5K0.5)NbO3-BaTiO3Ceramics Japanese Journal of Applied Physics. ,vol. 43, pp. 6662- 6666 ,(2004) , 10.1143/JJAP.43.6662
Hajime Nagata, Kenji Matsumoto, Tadayuki Hirosue, Yuji Hiruma, Tadashi Takenaka, Fabrication and Electrical Properties of Potassium Niobate Ferroelectric Ceramics Japanese Journal of Applied Physics. ,vol. 46, pp. 7084- 7088 ,(2007) , 10.1143/JJAP.46.7084
B. Noheda, D. E. Cox, G. Shirane, J. Gao, Z.-G. Ye, Phase diagram of the ferroelectric relaxor(1−x)PbMg1/3Nb2/3O3−xPbTiO3 Physical Review B. ,vol. 66, pp. 054104- ,(2002) , 10.1103/PHYSREVB.66.054104
K. H. Ryu, J. A. Cho, T. K. Song, M. -H. Kim, S. -S. Kim, H. -S. Lee, S. -J. Jeong, J. -S. Song, K. -S. Choi, Microstructure and Piezoelectric Properties of Lead-Free Niobate Ceramics Ferroelectrics. ,vol. 338, pp. 57- 63 ,(2006) , 10.1080/00150190600732678
Yiping Guo, Ken-ichi Kakimoto, Hitoshi Ohsato, (Na0.5K0.5)NbO3–LiTaO3 lead-free piezoelectric ceramics Materials Letters. ,vol. 59, pp. 241- 244 ,(2005) , 10.1016/J.MATLET.2004.07.057
Tadashi Takenaka, Hajime Nagata, Current status and prospects of lead-free piezoelectric ceramics Journal of The European Ceramic Society. ,vol. 25, pp. 2693- 2700 ,(2005) , 10.1016/J.JEURCERAMSOC.2005.03.125