In Situ Exploration of Thermal-Induced Domain Evolution with Phase Transition in LiNbO3-Modified K0.5Na0.5NbO3Single Crystal

doi:10.1021/acs.jpcc.7b03325

	In Situ Exploration of Thermal-Induced Domain Evolution with Phase Transition in LiNbO3-Modified K0.5Na0.5NbO3Single Crystal
	Cui, Anyang 1; Jiang, Kai 1; Zhang, Peng 1; Xu, Liping 1; Xu, Guisheng 2; Chen, Xiaomin 3; Hu, Zhigao 1; Chu, Junhao 1
刊名	Journal of Physical Chemistry C
	2017
卷号	121 期号:26 页码:14322-14329
ISSN号	19327447
DOI	10.1021/acs.jpcc.7b03325
英文摘要	Temperature dependent domain evolution and domain-wall motion of ferroelectric materials have attracted dramatically increased interest due to the crucial influences on piezo- and dielectric properties and the performances of related nanoapplications. Here, the unambiguous evolutions of 90°/180° domain walls accompanied by phase transition have been discovered first in LiNbO3doped (K0.5Na0.5)NbO3single crystal during heating and cooling processes by in situ coupling characterizations of Raman spectra and piezoresponse force microscopy (PFM). Considering the vibrational modes of a NbO6octahedron, the stretching modes of A1g(ν1), Eg(ν2), and the bending mode F2g(ν5) are sensitive to structural transition as well as the diversity of domain evolution. These modes are used to discuss the formation of 60° domain walls and the change of 90° domain-wall density. Under the precise control of the temperature gradient, homogeneous striped 90° domain boundaries movement and microscale out-of-plane polarization reversal can be observed. Simultaneously, as one of the most distinctive features from the ferroelectric first-order phase transition, a thermal hysteresis effect has been found in (K0.5Na0.5)NbO3-0.05LiNbO3single crystal. The present study focuses on the correlation of crystal structural transformation and thermal domain evolution. It affords an effective opportunity to explore the stable performance in a broad temperature range for domain-wall dependent ferroelectric devices. © 2017 American Chemical Society.
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/25389]
专题	中国科学院上海硅酸盐研究所
作者单位	1.Key Laboratory of Polar Materials and Devices (MOE), Technical Center for Multifunctional Magneto-Optical Spectroscopy (Shanghai), Department of Electronic Engineering, East China Normal University, Shanghai; 200241, China; 2.Key Laboratory of Transparent Opto-Functional Advanced Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai; 201899, China; 3.Bruker (Beijing) Scientific Technology Co., Ltd., Beijing; 100081, China
推荐引用方式 GB/T 7714	Cui, Anyang,Jiang, Kai,Zhang, Peng,et al. In Situ Exploration of Thermal-Induced Domain Evolution with Phase Transition in LiNbO3-Modified K0.5Na0.5NbO3Single Crystal[J]. Journal of Physical Chemistry C,2017,121(26):14322-14329.
APA	Cui, Anyang.,Jiang, Kai.,Zhang, Peng.,Xu, Liping.,Xu, Guisheng.,...&Chu, Junhao.(2017).In Situ Exploration of Thermal-Induced Domain Evolution with Phase Transition in LiNbO3-Modified K0.5Na0.5NbO3Single Crystal.Journal of Physical Chemistry C,121(26),14322-14329.
MLA	Cui, Anyang,et al."In Situ Exploration of Thermal-Induced Domain Evolution with Phase Transition in LiNbO3-Modified K0.5Na0.5NbO3Single Crystal".Journal of Physical Chemistry C 121.26(2017):14322-14329.