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Article

Polymorphic Phase Transition and Piezoelectric Performance of BaTiO3-CaSnO3 Solid Solutions

1
School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China
2
Center for Optics Research and Engineering (CORE), Key Laboratory of Laser and Infrared System of Ministry of Education, Shandong University, Qingdao 266237, China
*
Author to whom correspondence should be addressed.
Academic Editor: Kenji Uchino
Actuators 2021, 10(6), 129; https://doi.org/10.3390/act10060129
Received: 4 April 2021 / Revised: 29 May 2021 / Accepted: 4 June 2021 / Published: 13 June 2021
(This article belongs to the Special Issue Piezoelectric Actuators 2020)
BaTiO3-based piezoelectric ceramics have attracted considerable attention in recent years due to their tunable phase structures and good piezoelectric properties. In this work, the (1 − x)BaTiO3−xCaSnO3 (0.00 ≤ x ≤ 0.16, abbreviated as BTxCS) solid solutions, were prepared by traditional solid-state reaction methods. The phase transitions, microstructure, dielectric, piezoelectric, and ferroelectric properties of BT-xCS have been investigated in detail. The coexistence of rhombohedral, orthorhombic, and tetragonal phases near room temperature, i.e., polymorphic phase transition (PPT), has been confirmed by X-ray diffraction and temperature-dependent dielectric measurements in the compositions range of 0.06 ≤ x ≤ 0.10. The multiphase coexistence near room temperature provides more spontaneous polarization vectors and facilitates the process of polarization rotation and extension by an external electric field, which is conducive to the enhancement of piezoelectric response. Remarkably, the composition of BT-0.08CS exhibits optimized piezoelectric properties with a piezoelectric coefficient d33 of 620 pC/N, electromechanical coupling factors kp of 58%, kt of 40%, and a piezoelectric strain coefficient d33* of 950 pm/V. View Full-Text
Keywords: barium titanate (BaTiO3); piezoelectric properties; polymorphic phase transition barium titanate (BaTiO3); piezoelectric properties; polymorphic phase transition
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MDPI and ACS Style

Wang, Q.; Yan, H.-Z.; Zhao, X.; Wang, C.-M. Polymorphic Phase Transition and Piezoelectric Performance of BaTiO3-CaSnO3 Solid Solutions. Actuators 2021, 10, 129. https://doi.org/10.3390/act10060129

AMA Style

Wang Q, Yan H-Z, Zhao X, Wang C-M. Polymorphic Phase Transition and Piezoelectric Performance of BaTiO3-CaSnO3 Solid Solutions. Actuators. 2021; 10(6):129. https://doi.org/10.3390/act10060129

Chicago/Turabian Style

Wang, Qian, Hong-Ze Yan, Xian Zhao, and Chun-Ming Wang. 2021. "Polymorphic Phase Transition and Piezoelectric Performance of BaTiO3-CaSnO3 Solid Solutions" Actuators 10, no. 6: 129. https://doi.org/10.3390/act10060129

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