Enhanced piezoelectric properties of Sm3+-modified PMN-PT ceramics and their application in energy harvesting. Issue 6 (15th March 2022)

• Record Type: Journal Article
• Authors: Fang, Ze; Tian, Xue; Zheng, Fengji; Jiang, Xiaodong; Ye, Wanneng; Qin, Yalin; Wang, Xiaoxiong; Zhang, Yongcheng
• Is Part Of: Ceramics international. Volume 48:Issue 6(2022)
• Page Start: 7550
• Page End: 7556
• Publication Date: 2022-03-15
• Subjects: PMN-PT ceramics -- Sm doping -- Piezoelectric coefficient -- Electromechanical coupling coefficient -- Energy harvesting; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2021.11.298
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: 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(Mg1/3 Nb2/3 )O3 -0.30PbTiO3 (PMN-PT) ceramics was investigated. Sm-doped PMN-PT ceramics with both high piezoelectric properties ( d 33 ∼1406 pC/N) and a large electromechanical coupling coefficient ( k p ∼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.