Abstract
Ferroelectric phase coexistence was constructed in (1−x)BaTiO 3-xCaSnO 3 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 CaSnO 3 caused a series of phase transitions in the (1−x)BaTiO 3-xCaSnO 3 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 d 33 and k p 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.
Original language | English |
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Pages (from-to) | 2594-2605 |
Number of pages | 12 |
Journal | Journal of the American Ceramic Society |
Volume | 101 |
Issue number | 6 |
DOIs | |
Publication status | Published - 1 Jun 2018 |
Keywords
- barium titanate
- lead-free ceramics
- perovskites
- phase transition
- piezoelectric materials/properties
ASJC Scopus subject areas
- Ceramics and Composites
- Geology
- Geochemistry and Petrology
- Materials Chemistry