Misfit strain relaxations of (101)-oriented ferroelectric PbTiO3/(La, Sr)(Al, Ta)O3 thin film systems

doi:10.1557/jmr.2018.422

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	Misfit strain relaxations of (101)-oriented ferroelectric PbTiO3/(La, Sr)(Al, Ta)O3 thin film systems
	Feng, Yanpeng 1,2; Tang, Yunlong 2; Zhu, Yinlian 2; Zou, Minjie 2,4; Ma, Xiuliang 2,3
刊名	Journal of Materials Research
	2018-12-28
卷号	33 期号:24 页码:4156-4164
关键词	Aluminum metallography Crystallography Ferroelectric films Ferroelectric thin films Ferroelectricity High resolution transmission electron microscopy Lead titanate Pulsed laser deposition Scanning electron microscopy Strain relaxation Tantalum metallography Titanium compounds Transmission electron microscopy Transmissions Dielectricity Gaining insights High index High quality Misfit strain relaxation Misfit strains Switching behaviors Thin film systems
ISSN号	08842914
DOI	10.1557/jmr.2018.422
英文摘要	High-index ferroelectric thin films show excellent dielectricity, piezoelectricity and switching behaviors. Understanding the misfit strain relaxation behavior may prove beneficial to gaining insights into the high-quality growth of high-index ferroelectric films. In this study, ferroelectric PbTiO3 thin films were deposited on the (101)-oriented (La, Sr)(Al, Ta)O3 substrate by pulsed laser deposition and were investigated using (scanning) transmission electron microscopy. Two types of misfit dislocations with line directions of Œ©111) and [010] were found at the interface. The Œ©111) dislocation exhibited Burgers vectors of a[011] or, while the [010] dislocation featured Burgers vectors of. The former might be generated by gliding, and the latter by climbing. We propose that the misfit strain relaxation in this film system basically results from the formation of dislocations and the residual misfit strain is relaxed via the formation of 90° ac domains. Copyright © Materials Research Society 2018.
WOS研究方向	Materials Science
语种	英语
出版者	Cambridge University Press
WOS记录号	WOS:000454574700003
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114915]
专题	材料科学与工程学院_特聘教授组
作者单位	1.University of Chinese, Academy of Sciences, Beijing; 100049, China; 2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang; 110016, China; 3.State Key Lab of Advanced Processing and Recycling on Non-ferrous Metals, Lanzhou University of Technology, Lanzhou; 730050, China 4.School of Material Science and Engineering, University of Science and Technology of China, Hefei; 230026, China;
推荐引用方式 GB/T 7714	Feng, Yanpeng,Tang, Yunlong,Zhu, Yinlian,et al. Misfit strain relaxations of (101)-oriented ferroelectric PbTiO3/(La, Sr)(Al, Ta)O3 thin film systems[J]. Journal of Materials Research,2018,33(24):4156-4164.
APA	Feng, Yanpeng,Tang, Yunlong,Zhu, Yinlian,Zou, Minjie,&Ma, Xiuliang.(2018).Misfit strain relaxations of (101)-oriented ferroelectric PbTiO3/(La, Sr)(Al, Ta)O3 thin film systems.Journal of Materials Research,33(24),4156-4164.
MLA	Feng, Yanpeng,et al."Misfit strain relaxations of (101)-oriented ferroelectric PbTiO3/(La, Sr)(Al, Ta)O3 thin film systems".Journal of Materials Research 33.24(2018):4156-4164.