3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films

IMR OpenIR

	3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films
	Tang, Y. L.; Zhu, Y. L.; Hong, Z. J.; Eliseev, E. A.; Morozovska, A. N.; Wang, Y. J.; Liu, Y.; Xu, Y. B.; Wu, B.; Chen, L. Q.; Pennycook, S. J.; Ma, X. L.; Ma, XL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
	2017-03-01
发表期刊	JOURNAL OF MATERIALS RESEARCH
ISSN	0884-2914
卷号	32 期号:5 页码:957-967
摘要	Although the strong coupling of polarization to spontaneous strain in ferroelectrics would impart a flux-closure with severe disclination strains, recent studies have successfully stabilized such a domain via a nano-scaled multi-layer growth. Nonetheless, the detailed distributions of polarizations in three-dimensions (3D) and how the strains inside a flux closure affect the structures of domain walls are still less understood. Here we report a 3D polarization texture of a 4-fold flux closure domain identified in tensile strained ferroelectric PbTiO3/SrTiO3 multilayer films. Ferroelectric displacement analysis based on aberration-corrected scanning transmission electron microscopic imaging reveals highly inhomogeneous strains with strain gradient above 10(7)/m. These giant disclination strains significantly broaden the 90 degrees domain walls, while the flexoelectric coupling at 180 degrees domain wall is less affected. The present observations are helpful for understanding the basics of topological dipole textures and indicate novel applications of ferroelectrics through engineering strains.; Although the strong coupling of polarization to spontaneous strain in ferroelectrics would impart a flux-closure with severe disclination strains, recent studies have successfully stabilized such a domain via a nano-scaled multi-layer growth. Nonetheless, the detailed distributions of polarizations in three-dimensions (3D) and how the strains inside a flux closure affect the structures of domain walls are still less understood. Here we report a 3D polarization texture of a 4-fold flux closure domain identified in tensile strained ferroelectric PbTiO3/SrTiO3 multilayer films. Ferroelectric displacement analysis based on aberration-corrected scanning transmission electron microscopic imaging reveals highly inhomogeneous strains with strain gradient above 10(7)/m. These giant disclination strains significantly broaden the 90 degrees domain walls, while the flexoelectric coupling at 180 degrees domain wall is less affected. The present observations are helpful for understanding the basics of topological dipole textures and indicate novel applications of ferroelectrics through engineering strains.
部门归属	[tang, y. l. ; zhu, y. l. ; wang, y. j. ; liu, y. ; xu, y. b. ; wu, b. ; ma, x. l.] chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china ; [hong, z. j. ; chen, l. q.] penn state univ, dept mat sci & engn, university pk, pa 16802 usa ; [eliseev, e. a.] natl acad sci ukraine, inst problems mat sci, ua-03142 kiev, ukraine ; [morozovska, a. n.] natl acad sci ukraine, inst phys, ua-03028 kiev, ukraine ; [pennycook, s. j.] natl univ singapore, dept mat sci & engn, singapore 117576, singapore
学科领域	Materials Science, Multidisciplinary
资助者	National Natural Science Foundation of China [51231007, 51571197, 51501194, 51521091]; National Basic Research Program of China [2014CB921002]; IMR SYNL-T. S. Ke Research Fellowship and the Youth Innovation Promotion Association CAS [2016177]; National Academy of Science of the Ukraine; US National Science Foundation under NSF [DMR1210588, DMR-1420620]; U.S. Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering [DE-FG02-07ER46417]
收录类别	SCI
语种	英语
WOS记录号	WOS:000398533000007
引用统计	被引频次：13[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/321006/78247
专题	中国科学院金属研究所
通讯作者	Ma, XL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China.
推荐引用方式 GB/T 7714	Tang, Y. L.,Zhu, Y. L.,Hong, Z. J.,et al. 3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films[J]. JOURNAL OF MATERIALS RESEARCH,2017,32(5):957-967.
APA	Tang, Y. L..,Zhu, Y. L..,Hong, Z. J..,Eliseev, E. A..,Morozovska, A. N..,...&Ma, XL .(2017).3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films.JOURNAL OF MATERIALS RESEARCH,32(5),957-967.
MLA	Tang, Y. L.,et al."3D polarization texture of a symmetric 4-fold flux closure domain in strained ferroelectric PbTiO3 films".JOURNAL OF MATERIALS RESEARCH 32.5(2017):957-967.