Atomic scale study of the oxygen annealing effect on piezoelectricity enhancement of (K,Na)NbO3 nanorods

doi:10.1039/d0tc03152f

IMR OpenIR

	Atomic scale study of the oxygen annealing effect on piezoelectricity enhancement of (K,Na)NbO3 nanorods
	Li, Luying; Hu, Xiaokang; Jin, Lei; He, Yahua; Jia, Shuangfeng; Sheng, Huaping; Cheng, Yongfa; Li, Li; Wang, Zhao; Gu, Haoshuang; Zhu, Yinlian; Wang, Jianbo; Gao, Yihua
	2020-11-28
发表期刊	JOURNAL OF MATERIALS CHEMISTRY C
卷号	8 期号:44 页码:15830-15838
摘要	With the increasing requirement of developing non-toxic piezoelectric materials, an alkaline niobate-based perovskite solid (K,Na)NbO3 (KNN) has been intensively studied. Promising piezoelectric properties are reported, which are mostly achieved by adding other elements, or simply varying the K/Na ratio. It is found that KNN nanorods grown on conductive Nb-doped SrTiO3 (STO) substrates show enhanced piezoelectric properties after annealing at 800 degrees C for 12 h [Y. He, Z. Wang, W. Jin, X. Hu, L. Li, Y. Gao, X. Zhang, H. Gu and X. Wang, Appl. Phys. Lett., 2017, 110, 212904]. However, the underlying mechanism for property enhancement at the atomic scale is not clearly revealed. In this study, comprehensive transmission electron microscopy techniques are utilized focusing on the atomic scale study of the interfacial composition, structures, strain, dipolar displacement vectors and their variations along the interface normal of the as-grown and annealed KNN nanorods. The results indicate phase transformation during annealing, and a larger spontaneous polarization within each unit cell of the annealed KNN nanorods, which lead to an overall enhancement of the piezoelectric properties. These results would be very beneficial for advanced nanogenerators and sensors with enhanced piezoelectric properties.
DOI	10.1039/d0tc03152f
WOS记录号	WOS:000590410200029
引用统计	被引频次：3[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/155654
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Li, Luying,Hu, Xiaokang,Jin, Lei,et al. Atomic scale study of the oxygen annealing effect on piezoelectricity enhancement of (K,Na)NbO3 nanorods[J]. JOURNAL OF MATERIALS CHEMISTRY C,2020,8(44):15830-15838.
APA	Li, Luying.,Hu, Xiaokang.,Jin, Lei.,He, Yahua.,Jia, Shuangfeng.,...&Gao, Yihua.(2020).Atomic scale study of the oxygen annealing effect on piezoelectricity enhancement of (K,Na)NbO3 nanorods.JOURNAL OF MATERIALS CHEMISTRY C,8(44),15830-15838.
MLA	Li, Luying,et al."Atomic scale study of the oxygen annealing effect on piezoelectricity enhancement of (K,Na)NbO3 nanorods".JOURNAL OF MATERIALS CHEMISTRY C 8.44(2020):15830-15838.