Boosting Transduction Coefficient in BaTiO3-Based Piezoceramic through Phase Boundary Engineering
Boosting Transduction Coefficient in BaTiO3-Based Piezoceramic through Phase Boundary Engineering
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DOI：
10.1016/j.jeurceramsoc.2021.12.056
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发表时间：
2021-12
影响因子：
5.7
通讯作者：
Chong Gao;Xiaodong Yan;Mupeng Zheng;Xin Gao;Kang Zhao;Ling Li;M. Zhu;Y. Hou
中科院分区：
文献类型：
--
作者：
Chong Gao;Xiaodong Yan;Mupeng Zheng;Xin Gao;Kang Zhao;Ling Li;M. Zhu;Y. Hou
Transduction coefficient (d33×g33) is the core parameter for evaluating piezoelectric energy harvesting materials. However, due to the thermodynamic constraints, the synergistic variation between piezoelectric charge constant (d33) and dielectric constant (εr) indeed hinder the further increase ofd33×g33. Herein, an enhancedd33×g33of 13,000 × 10−15m2/N was achieved in 0.80BaTiO3-0.10CaTiO3-0.10BaZrO3(BC0.1ZT) lead-free solid solution for the first time through a phase boundary engineering strategy. The highd33×g33mainly stems from non-synergistic variation of dielectric and piezoelectric performance in the rhombohedral-orthorhombic (R-O) phase boundary, in which the lowεrcomes from the increased domain size and reduced domain wall density; while the high configurational sensitivity of the unique domains to external electric field contributed to the highd33. Our findings provide an alternative approach for enhanced energy harvesting performance by tracing the strategy of designing phase boundary to decoupled33andεr.
