Thermally stable electrostrain in BiFeO3-BaTiO3-based high temperature lead-free piezoceramics

doi:10.1063/1.5113919

	Thermally stable electrostrain in BiFeO3-BaTiO3-based high temperature lead-free piezoceramics
	Wang, Lei; Liang, Ruihong; Zhou, Zhiyong; Dong, Xianlin
刊名	APPLIED PHYSICS LETTERS
	2019-08-19
卷号	115 期号:8
ISSN号	0003-6951
DOI	10.1063/1.5113919
文献子类	Article
英文摘要	BiFeO3-BaTiO3 ceramics possess both high electromechanical properties and a high Curie temperature, which are promising high temperature lead-free piezoactuator materials. However, the poor thermal stability of electrostrain limits their practical exploration. Here, we report a temperature stable electrostrain of 0.18% at 6kV/mm, with a variation of 13% from 25 degrees C to 175 degrees C for (1-x)(0.67BiFeO(3)-0.33BaTiO(3))-xSr(0.8)Bi(0.1)?0.1TiO2.95 solid solutions with x=0.04. The addition of a relaxor ferroelectric Sr0.8Bi0.1?0.1TiO2.95 (SBT) breaks the long range ferroelectric order of BiFeO3-BaTiO3 (BFBT) ceramics. More importantly, the combined effect of the negative temperature dependent electrostrain for relaxors and the positive one for the parent BFBT contributes to the superior temperature stability of the electrostrain. This work provides an effective method for designing piezoelectric materials with an enhanced temperature stability for high temperature actuator applications.
WOS研究方向	Physics
语种	英语
出版者	AMER INST PHYSICS
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/26900]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Wang, Lei,Liang, Ruihong,Zhou, Zhiyong,et al. Thermally stable electrostrain in BiFeO3-BaTiO3-based high temperature lead-free piezoceramics[J]. APPLIED PHYSICS LETTERS,2019,115(8).
APA	Wang, Lei,Liang, Ruihong,Zhou, Zhiyong,&Dong, Xianlin.(2019).Thermally stable electrostrain in BiFeO3-BaTiO3-based high temperature lead-free piezoceramics.APPLIED PHYSICS LETTERS,115(8).
MLA	Wang, Lei,et al."Thermally stable electrostrain in BiFeO3-BaTiO3-based high temperature lead-free piezoceramics".APPLIED PHYSICS LETTERS 115.8(2019).