Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System

IMR OpenIR

	Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System
	Xu, YB; Tang, YL; Zhu, YL; Liu, Y; Li, S; Zhang, SR; Ma, XL; Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
	2016-10-11
发表期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
卷号	6
摘要	Ferroelectric thin films grown on high index substrates show unusual structural and switching dynamics due to their special strain states. Understanding the misfit relaxation behavior is crucial to facilitate the high index thin film growth with improved quality. In this paper, ferroelectric PbTiO3 thin films were grown on LaAlO3 (111) substrates by pulsed laser deposition technique. The microstructures were investigated by combinations of conventional and aberration-corrected transmission electron microscopy. Diffraction contrast analysis and high resolution imaging reveal that high density interfacial dislocations were distributed at the interfaces. These dislocations have mixed character with Burgers vectors of a <110> and line directions of <112>. The edge components of the dislocations, with the Burgers vectors parallel to the interface, accommodate the lattice mismatch and are the main contributor to the misfit relaxation of this system. The formation mechanism of these dislocations is proposed and discussed to elucidate the novel mismatch relaxation behavior of <111> oriented perovskite films.
部门归属	[xu, y. b. ; tang, y. l. ; zhu, y. l. ; liu, y. ; li, s. ; zhang, s. r. ; ma, x. l.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, peoples r china
学科领域	Multidisciplinary Sciences
资助者	National Natural Science Foundation of China [51231007, 51571197, 51501194]; National Basic Research Program of China [2014CB921002]; Youth Innovation Promotion Association of CAS [2016177]
收录类别	sci
语种	英语
WOS记录号	WOS:000384928300001
引用统计	被引频次：16[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/76239
专题	中国科学院金属研究所
通讯作者	Ma, XL (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Xu, YB,Tang, YL,Zhu, YL,et al. Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System[J]. SCIENTIFIC REPORTS,2016,6.
APA	Xu, YB.,Tang, YL.,Zhu, YL.,Liu, Y.,Li, S.,...&Ma, XL .(2016).Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System.SCIENTIFIC REPORTS,6.
MLA	Xu, YB,et al."Misfit Strain Relaxation of Ferroelectric PbTiO3/LaAlO3 (111) Thin Film System".SCIENTIFIC REPORTS 6(2016).