Dynamic Mechanical and Electric Behaviors of La-Doped BiVO4

doi:10.1021/acs.cgd.8b01356

	Dynamic Mechanical and Electric Behaviors of La-Doped BiVO4
	Lin, He; Zhang, Haitao; He, Xiang; Xu, Wentao; Zhou, Youfu; Yi, Zhiguo
刊名	CRYSTAL GROWTH & DESIGN
	2019
卷号	19 期号:1 页码:275
ISSN号	1528-7483
DOI	10.1021/acs.cgd.8b01356
文献子类	Article
英文摘要	Bismuth vanadate (BiVO4) is an important semiconductor with wide applications, but in-depth understanding of its fundamental dynamic behaviors is still lacking. To address this issue, the comprehensive analysis of structure, internal friction (IF), modulus, dielectric, and impedance spectra was employed to unambiguously disclose the dynamic mechanical and electric behaviors for a series of Bi1-xLaxVO4 ceramics (0 <= x <= 0.15). In sensitive mechanical measurement, five IF peaks, corresponding modulus anomalies and high-temperature creep behavior, have been observed in our Bi1-xLaxVO4 ceramics. Through analyzing their related kinetic parameters, defect formations and evolution processes, the complex evolution model of ferroelastic domains including four different stages, and the origin of grain boundary relaxation are well established. As for the electric experiment, there are two apparently different activation processes in low and high temperature regions, respectively. In conjunction with structural and mechanical characterizations, we confirm that the mixed electric/oxide ionic conduction dominates from 433 to 633 K, undergoing a structural change (633-673 K) to the complicated defect conduction at higher temperatures (673-833 K). Our findings smooth the path for better realization of the fundamental dynamic behaviors as well as extending practical applications of BiVO4-based materials.
WOS研究方向	Chemistry ; Crystallography ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27431]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Lin, He,Zhang, Haitao,He, Xiang,et al. Dynamic Mechanical and Electric Behaviors of La-Doped BiVO4[J]. CRYSTAL GROWTH & DESIGN,2019,19(1):275.
APA	Lin, He,Zhang, Haitao,He, Xiang,Xu, Wentao,Zhou, Youfu,&Yi, Zhiguo.(2019).Dynamic Mechanical and Electric Behaviors of La-Doped BiVO4.CRYSTAL GROWTH & DESIGN,19(1),275.
MLA	Lin, He,et al."Dynamic Mechanical and Electric Behaviors of La-Doped BiVO4".CRYSTAL GROWTH & DESIGN 19.1(2019):275.