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- Title
New potassium-sodium niobate ternary system with large piezoelectric coefficient and high Curie temperature.
- Authors
Jiang, Laiming; Tan, Zhi; Xing, Jie; Wu, Jiagang; Chen, Qiang; Zhang, Wen; Xiao, Dingquan; Zhu, Jianguo
- Abstract
In this paper, a new potassium-sodium niobate ternary system (0.96 − x)KaNaNbO-0.04BiNaZrO- xBiAlO [(0.96 − x)KNN-0.04BNZ- xBA] with large piezoelectric coefficient ( d ) and high Curie temperature ( T ) simultaneously was attained due to the movement of orthorhombic-tetragonal phase transition temperature ( T ) to room temperature and the enhanced dielectric properties. Especially, the ceramics with a composition of x = 0.005 show a large d of ~355 pC/N together with a high T of ~335 °C. And moreover, a good thermal stability of d (e.g., d ≥ 316 pC/N, T ≤ 300 °C) was also observed in the ternary ceramics. Such a good comprehensive performance of d and T attained in this work is superior to many reported results in the KNN-based materials. As a result, it was believed that this potassium-sodium niobate system with both large d and high T will become one of the promising materials in the practical application.
- Subjects
POTASSIUM; SODIUM compounds; PIEZOELECTRIC materials; MAGNETIC properties of condensed matter; CURIE temperature
- Publication
Journal of Materials Science: Materials in Electronics, 2016, Vol 27, Issue 9, p9812
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-016-5047-7