Large Piezoelectricity in Ternary Lead-Free Single Crystals

doi:10.1002/aelm.201900949

	Large Piezoelectricity in Ternary Lead-Free Single Crystals
	Wang, Yaojin; Luo, Chengtao; Wang, Shuhao; Chen, Chao; Yuan, Guoliang; Luo, Haosu; Viehland, Dwight
刊名	ADVANCED ELECTRONIC MATERIALS
	2019-12-31
关键词	ferroelectric single crystals lead-free piezoelectric materials NBT-based phase coexistence piezoelectrics
ISSN号	2199-160X
DOI	10.1002/aelm.201900949
文献子类	Article; Early Access
英文摘要	Since industry-standard piezoelectric materials, such as lead zirconium titanate ceramics, contain toxic lead, a rapid surge in research on lead-free piezoelectric materials is occurring due to concerns over environmental safety and human health. A ternary lead-free (Na0.5Bi0.5)TiO3-BaTiO3-(K0.5Na0.5)NbO3 single crystal with a large field induced strain of approximate to 0.9% and a giant piezoelectric coefficient d(33) of 840 pC N-1 at room temperature is reported. It is revealed that the electric-field-induced phase transition and phase boundary between energetically comparable polar states (i.e., R3c and P4mm) play an important role in achieving the ultrahigh piezoelectricity. Transmission electron microscopy and scan probe microscopy are employed to verify the weak-polar ferroelectric R3c and P4bm structure in the ground state. These unprecedentedly high piezoelectric properties make lead-free ternary single crystals a leading candidate for piezoelectric-based device applications, especially toward the era of smart homes and implantable medical devices.
WOS关键词	POLARIZATION ; CERAMICS ; ROTATION ; STRAINS
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27488]
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, Yaojin,Luo, Chengtao,Wang, Shuhao,et al. Large Piezoelectricity in Ternary Lead-Free Single Crystals[J]. ADVANCED ELECTRONIC MATERIALS,2019.
APA	Wang, Yaojin.,Luo, Chengtao.,Wang, Shuhao.,Chen, Chao.,Yuan, Guoliang.,...&Viehland, Dwight.(2019).Large Piezoelectricity in Ternary Lead-Free Single Crystals.ADVANCED ELECTRONIC MATERIALS.
MLA	Wang, Yaojin,et al."Large Piezoelectricity in Ternary Lead-Free Single Crystals".ADVANCED ELECTRONIC MATERIALS (2019).