Yang, Y., Zhou, Y., Ren, J., Zheng, Q., Lam, K. H. and Lin, D. (2018) Phase coexistence and large piezoelectricity in BaTiO3-CaSnO3 lead-free ceramics. Journal of the American Ceramic Society, 101(6), pp. 2594-2605. (doi: 10.1111/jace.15416)
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Abstract
Ferroelectric phase coexistence was constructed in (1−x)BaTiO3-xCaSnO3 lead-free ceramics, and its relationship with the piezoelectricity of the materials was investigated to ascertain potential factors for strong piezoelectric response. It is found that the addition of CaSnO3 caused a series of phase transitions in the (1−x)BaTiO3-xCaSnO3 ceramics, and a ferroelectric coexistence of rhombohedral, orthorhombic, and tetragonal phases is formed at x = 0.08, where the ceramics exhibit the lowest energy barrier and consequently facilitate the polarization rotation and extension, resulting in the optimal piezoelectricity of d33 and kp values of 550 pC/N and 0.60, respectively. Our study provides an intuitive insight to understand the origin of high piezoelectricity in the ceramics with the coexistence of multiferroelectric phases.
| Item Type: | Articles |
|---|---|
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Lam, Dr Koko |
| Authors: | Yang, Y., Zhou, Y., Ren, J., Zheng, Q., Lam, K. H., and Lin, D. |
| College/School: | College of Science and Engineering > School of Engineering > Systems Power and Energy |
| Journal Name: | Journal of the American Ceramic Society |
| Publisher: | Wiley |
| ISSN: | 0002-7820 |
| ISSN (Online): | 1551-2916 |
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