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Actuators 2017, 6(3), 24; https://doi.org/10.3390/act6030024

Recent Progress on BaTiO3-Based Piezoelectric Ceramics for Actuator Applications

1
State Key Laboratory of Electrical Insulation and Power Equipment and Multi-Disciplinary Materials Research Center, Frontier Institute of Science and Technology, Xi’an Jiaotong University, Xi’an 710049, China
2
Ferroic Physics Group, National Institute for Materials Science, Tsukuba 305-0047, Ibaraki, Japan
*
Authors to whom correspondence should be addressed.
Received: 15 June 2017 / Revised: 14 July 2017 / Accepted: 23 July 2017 / Published: 31 July 2017
(This article belongs to the Special Issue Electrochemical and Electromechanical Actuators)
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Abstract

Due to issues with Pb toxicity, there is an urgent need for high performance Pb-free alternatives to Pb-based piezoelectric ceramics. Although pure BaTiO3 material exhibits fairly low piezoelectric coefficients, further designing of such a material system greatly enhances the piezoelectric response by means of domain engineering, defects engineering, as well as phase boundary engineering. Especially after the discovery of a Ba(Zr0.2Ti0.8)O3x(Ba0.7Ca0.3)TiO3 system with extraordinarily high piezoelectric properties (d33 > 600 pC/N), BaTiO3-based piezoelectric ceramics are considered as one of the promising Pb-free substitutes. In the present contribution, we summarize the idea of designing high property BaTiO3 piezoceramic through domain engineering, defect-doping, as well as morphotropic phase boundary (MPB). In spite of its drawback of low Curie temperature, BaTiO3-based piezoelectric materials can be considered as an excellent model system for exploring the physics of highly piezoelectric materials. The relevant material design strategy in BaTiO3-based materials can provide guidelines for the next generation of Pb-free materials with even better piezoelectric properties that can be anticipated in the near future. View Full-Text
Keywords: piezoelectricity; Pb-free ceramics; BaTiO3; morphotropic phase boundary; strain piezoelectricity; Pb-free ceramics; BaTiO3; morphotropic phase boundary; strain
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Gao, J.; Xue, D.; Liu, W.; Zhou, C.; Ren, X. Recent Progress on BaTiO3-Based Piezoelectric Ceramics for Actuator Applications. Actuators 2017, 6, 24.

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