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Actuators 2017, 6(3), 24;

Recent Progress on BaTiO3-Based Piezoelectric Ceramics for Actuator Applications

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
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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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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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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