Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7994593 | Journal of Alloys and Compounds | 2018 | 8 Pages |
Abstract
In this work, we reported that a BiFeO3-BaTiO3 (BF-BT) ceramics with Li2CO3 as a sintering aid was fabricated in order to develop a new materials sintered at low-temperature for piezoelectric applications. The phase transition, microstructure, dielectric, piezoelectric and ferroelectric properties, and temperature stability of the ceramics were investigated. The results show that the addition of Li2CO3 improves the electrical properties of BF-BT ceramics and decreases the sintering temperature from 990 °C to 930 °C. The obtained Li2CO3-doped ceramics sintered at 930 °C when x = 0.3 mol% have an optimized electrical properties, which were listed as follows: (kp = 0.294, Qm = 38.33, tanδ = 0.043 and d33 = 163 pC/N), high Curie temperatures (Tc = 508 °C) and high depolarization temperature (Td = 480 °C). These results indicate that this material is a promising candidate for high-temperature lead-free piezoelectric applications.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Shibo Guan, Huabin Yang, Yazhou Zhao, Rui Zhang,