Enhanced piezoelectric properties of Sm3+-modified PMN-PT ceramics and their application in energy harvesting
| Autor: | Fengji Zheng, Yalin Qin, Ze Fang, Xiao-Xiong Wang, Wanneng Ye, Xue Tian, Xiaodong Jiang, Yongcheng Zhang |
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| Rok vydání: | 2022 |
| Předmět: |
Electromechanical coupling coefficient
Materials science Process Chemistry and Technology Dielectric Microstructure Ferroelectricity Piezoelectricity Surfaces Coatings and Films Electronic Optical and Magnetic Materials visual_art Materials Chemistry Ceramics and Composites visual_art.visual_art_medium Energy transformation Ceramic Composite material Energy harvesting |
| Zdroj: | Ceramics International. 48:7550-7556 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2021.11.298 |
| Popis: | Piezoelectric materials are widely used in electromechanical energy conversion, such as in sensors, transducers, and self-powered materials. In this paper, the influence of the Sm doping content on the microstructure and ferroelectric, piezoelectric, dielectric, and field-induced strain properties of 0.70Pb(Mg1/3Nb2/3)O3-0.30PbTiO3 (PMN-PT) ceramics was investigated. Sm-doped PMN-PT ceramics with both high piezoelectric properties (d33∼1406 pC/N) and a large electromechanical coupling coefficient (kp∼0.69) were synthesized. Based on their piezoelectric effect, a maximum output voltage of 31 V was achieved under external forces. The output voltages showed satisfactory stability, repeatability, and sensitivity under periodic external forces; hence, Sm-doped PMN-PT piezoelectric ceramics are potential candidates for energy conversion and signal monitoring. |
| Databáze: | OpenAIRE |
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