Giant power output in lead-free ferroelectrics by shock-induced phase transition

doi:10.1103/PhysRevMaterials.3.035401

	Giant power output in lead-free ferroelectrics by shock-induced phase transition
	Gao, Zhipeng; Peng, Wei; Chen, Bin; Redfern, Simon A. T.; Wang, Ke; Chu, Baojin; He, Qiang; Sun, Yi; Chen, Xuefeng; Nie, Hengchang
刊名	PHYSICAL REVIEW MATERIALS
	2019-03-11
卷号	3 期号:3
ISSN号	2475-9953
DOI	10.1103/PhysRevMaterials.3.035401
文献子类	Article
英文摘要	The force-electric effect in ferroelectrics is characterized by the release of bound charge during pressure/shock-induced depolarization. In contrast to other electrical energy storage systems, the charge-storage/release by the force-electric effect of ferroelectrics is determined by polarization switching or polar-nonpolar phase transition. This offers a further set of options for materials design in the realm of energy conversion, especially for the high power density applications. Here, we report that a ferroelectric ceramic, Na0.5Bi0.5TiO3 (NBT), can generate a high power output (3.04 x 10(8) W/kg) under shock compression, which is one of the highest values achieved by the force-electric effect. The in situ synchrotron x-ray diffraction studies reveal that this power output mainly arises from a polar-nonpolar phase transition (rhombohedral-orthorhombic). First-principles calculations show that this is a first-order phase transition that undergoes two-step structure changes. These results extend the application of the force-electric effect and are a key step in understanding the phase transition behaviors of NBT under high pressure.
WOS研究方向	Materials Science
语种	英语
出版者	AMER PHYSICAL SOC
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27282]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Gao, Zhipeng,Peng, Wei,Chen, Bin,et al. Giant power output in lead-free ferroelectrics by shock-induced phase transition[J]. PHYSICAL REVIEW MATERIALS,2019,3(3).
APA	Gao, Zhipeng.,Peng, Wei.,Chen, Bin.,Redfern, Simon A. T..,Wang, Ke.,...&Dong, Xianlin.(2019).Giant power output in lead-free ferroelectrics by shock-induced phase transition.PHYSICAL REVIEW MATERIALS,3(3).
MLA	Gao, Zhipeng,et al."Giant power output in lead-free ferroelectrics by shock-induced phase transition".PHYSICAL REVIEW MATERIALS 3.3(2019).