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Title: Phase coexistence and large piezoelectricity in BaTiO3-CaSnO3 lead-free ceramics
Authors: Yang, Y
Zhou, Y
Ren, J
Zheng, Q
Lam, KH 
Lin, D
Keywords: Barium titanate
Lead-free ceramics
Phase transition
Piezoelectric materials/properties
Issue Date: 2018
Publisher: Wiley-Blackwell
Source: Journal of the American Ceramic Society, 2018, v. 101, no. 6, p. 2594-2605 How to cite?
Journal: Journal of the American Ceramic Society 
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.
ISSN: 0002-7820
EISSN: 1551-2916
DOI: 10.1111/jace.15416
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