Thickness-Dependent Evolution of Piezoresponses and Stripe 90° Domains in (101)-Oriented Ferroelectric PbTiO3 Thin Films

doi:10.1021/acsami.8b07206

	Thickness-Dependent Evolution of Piezoresponses and Stripe 90° Domains in (101)-Oriented Ferroelectric PbTiO3 Thin Films
	Feng, Yanpeng 1,2; Tang, Yunlong 1; Ma, Desheng 3; Zhu, Yinlian 1; Zou, Minjie 1,4; Han, Mengjiao 1,2; Ma, Jinyuan1,5 ; Ma, Xiuliang1,5
	2018-07-25
发表期刊	ACS Applied Materials and Interfaces
ISSN	19448244
卷号	10 期号:29 页码:24627-24637
摘要	High-index ferroelectric films as (101)-orientated ones exhibit enhanced dielectric responses, piezoelectric responses, and exotic ferroelectric switching behaviors, which are potential candidates for applications in memories and capacitors. However, possible domain patterns and domain wall structures in (101)-oriented ferroelectric thin films are still elusive, which results in difficulties in understanding the origin and further modulating their special properties. In this work, a series of PbTiO3 (PTO) thin films with 35, 50, 60, and 70 nm in thickness were grown on (101)-oriented (LaAlO3)0.29(SrTa1/2Al1/2O3)0.71 (LSAT(101)) substrates by pulsed laser deposition and investigated by both piezoresponse force microscopy (PFM) and (scanning) transmission electron microscopy ((S)TEM). PFM measurements reveal that periodic stripe domains are dominant in 50 nm thick PTO films. Besides stripe domains, a/c domains appear in films with thickness more than 60 nm. A thickness-dependent evolution of piezoresponse amplitude indicates that the 50 nm thick PTO films demonstrate a superior piezoresponse. Electron diffraction and contrast analysis clarify that all these (101)-oriented PTO films contain periodic stripe ferroelectric 90° domains. The domain periods increase with the film thickness following Kittel's law. Aberration-corrected STEM imaging reveals that the stripe ferroelectric 90° domains have an alternate arrangement of wide and narrow c domains with polarization directions along [100] for c1 domains and [001] for c2 domains, forming a "head-to-tail" polarization configuration. Further strain analysis reveals that stripe domains have uniform strain distributions and distinct lattice rotations around domain walls. It is proposed that the periodic arrangement of high-density stripe 90° domains in 50 nm thick PTO films is the main contributor to the superior piezoresponse behavior. These results are expected to provide useful information to understand the domain structures in (101)-oriented PTO thin films and thus facilitate further modulation of the properties for potential applications. © 2018 American Chemical Society.
关键词	Domain walls Ferroelectric films Ferroelectric thin films Ferroelectricity High resolution transmission electron microscopy Lead titanate Polarization Pulse time modulation Pulsed laser deposition Scanning electron microscopy Scanning probe microscopy Titanium compounds Transmission electron microscopy Aberration-corrected STEM Domain wall structures Ferroelectric switching PbTiO3 Piezoelectric response Piezoresponse Piezoresponse force microscopy Polarization direction
DOI	10.1021/acsami.8b07206
收录类别	EI ; SCIE
语种	英语
资助项目	Youth Innovation Promotion Association CAS[2016177]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000440511900035
出版者	American Chemical Society
EI入藏号	20182805538599
EI主题词	Thin films
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 801 Chemistry
来源库	Compendex
分类代码	701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 801 Chemistry
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/114892
专题	材料科学与工程学院材料科学与工程学院_特聘教授组
通讯作者	Zhu, Yinlian
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China; 2.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China; 3.Nankai Univ, Sch Phys, Weijin Rd 94, Tianjin 300071, Peoples R China; 4.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China; 5.Lanzhou Univ Technol, Sch Mat Sci & Engn, Langongping Rd 287, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Feng, Yanpeng,Tang, Yunlong,Ma, Desheng,et al. Thickness-Dependent Evolution of Piezoresponses and Stripe 90° Domains in (101)-Oriented Ferroelectric PbTiO3 Thin Films[J]. ACS Applied Materials and Interfaces,2018,10(29):24627-24637.
APA	Feng, Yanpeng.,Tang, Yunlong.,Ma, Desheng.,Zhu, Yinlian.,Zou, Minjie.,...&Ma, Xiuliang.(2018).Thickness-Dependent Evolution of Piezoresponses and Stripe 90° Domains in (101)-Oriented Ferroelectric PbTiO3 Thin Films.ACS Applied Materials and Interfaces,10(29),24627-24637.
MLA	Feng, Yanpeng,et al."Thickness-Dependent Evolution of Piezoresponses and Stripe 90° Domains in (101)-Oriented Ferroelectric PbTiO3 Thin Films".ACS Applied Materials and Interfaces 10.29(2018):24627-24637.