Crystallographic Orientation and Surface Charge-Tailored Continuous Polarization Rotation State in Epitaxially Ferroelectric Nanostructures

doi:10.1021/acs.jpcc.9b04654

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	Crystallographic Orientation and Surface Charge-Tailored Continuous Polarization Rotation State in Epitaxially Ferroelectric Nanostructures
	Feng, Yanpeng 2,3; Zhang, Heng 1,2; Zhu, Yinlian 2; Wang, Yujia 2; Tang, Yunlong 2; Zou, Minjie 1,2; Han, Mengjiao 2,3; Geng, Wanrong 1,2; Ma, Jinyuan 1,2,4; Ma, Xiuliang 2,4
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2019-08-15
卷号	123 期号:32 页码:19602-19609
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.9b04654
通讯作者	Zhu, Yinlian(ylzhu@imr.ac.cn) ; Ma, Xiuliang(xlma@imr.ac.cn)
英文摘要	The multiple polarization states driven by polarization rotation could trigger giant piezoelectric responses in electromechanical sensors. Theoretically and experimentally, polarization rotation in ferroelectrics was contentiously reported in PbTiO3 thin films, which may result from low symmetric phases, flexoelectricity, or interfacial oxygen octahedral coupling. In this work, 5 nm PbTiO3 was grown on SrRuO3-buffered (001)- and (101)-oriented SrTiO3 substrates. By using piezoresponse force microscopy and (scanning) transmission electron microscopy, self-assembled PbTiO3 nanostructures with a triangular prism-shaped morphology (average width about 30 nm) were observed on the (100-oriented SrTiO3 substrate. Particularly, continuous polarization rotation state was confirmed in each PbTiO3 nanostructure, where the rotation angle is up to 90 approximately from the left side to the right side. In collaboration with phase-field simulations, it is proposed that the surface positive charge accumulation facilitates the formation of continuous polarization rotation. Piezoresponse force microscopy measurements indicate that these [101]PbTiO3 nanostructures with polarization rotation display a superior piezoelectric response compared with the [001]PbTiO3 thin film. These results not only shed light on understanding the polarization rotation mechanism in ferroelectrics but also are expected to provide useful information for developing the high performance of electromechanical devices.
资助项目	Key Research Program of Frontier Sciences CAS[QYZDJ-SSW-JSC010] ; National Natural Science Foundation of China[51671194] ; National Natural Science Foundation of China[51571197] ; National Basic Research Program of China[2014CB921002] ; IMR SYNL-T.S. Ke Research Fellowship ; Youth Innovation Promotion Association CAS[2016177]
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000481568900039
资助机构	Key Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China ; National Basic Research Program of China ; IMR SYNL-T.S. Ke Research Fellowship ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/134887]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhu, Yinlian; Ma, Xiuliang
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China 3.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Yuquan Rd 19, Beijing 100049, Peoples R China 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Langongping Rd 287, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Feng, Yanpeng,Zhang, Heng,Zhu, Yinlian,et al. Crystallographic Orientation and Surface Charge-Tailored Continuous Polarization Rotation State in Epitaxially Ferroelectric Nanostructures[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2019,123(32):19602-19609.
APA	Feng, Yanpeng.,Zhang, Heng.,Zhu, Yinlian.,Wang, Yujia.,Tang, Yunlong.,...&Ma, Xiuliang.(2019).Crystallographic Orientation and Surface Charge-Tailored Continuous Polarization Rotation State in Epitaxially Ferroelectric Nanostructures.JOURNAL OF PHYSICAL CHEMISTRY C,123(32),19602-19609.
MLA	Feng, Yanpeng,et al."Crystallographic Orientation and Surface Charge-Tailored Continuous Polarization Rotation State in Epitaxially Ferroelectric Nanostructures".JOURNAL OF PHYSICAL CHEMISTRY C 123.32(2019):19602-19609.