Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films

IMR OpenIR

	Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films
	Tang, Y. L.; Zhu, Y. L.; Ma, X. L.; Borisevich, A. Y.; Morozovska, A. N.; Eliseev, E. A.; Wang, W. Y.; Wang, Y. J.; Xu, Y. B.; Zhang, Z. D.; Pennycook, S. J.; xlma@imr.ac.cn
	2015
发表期刊	SCIENCE
ISSN	0036-8075
卷号	348 期号:6234 页码:547-551
摘要	Nanoscale ferroelectrics are expected to exhibit various exotic domain configurations, such as the full flux-closure pattern that is well known in ferromagnetic materials. Here we observe not only the atomic morphology of the flux-closure quadrant but also a periodic array of flux closures in ferroelectric PbTiO3 films, mediated by tensile strain on a GdScO3 substrate. Using aberration-corrected scanning transmission electron microscopy, we directly visualize an alternating array of clockwise and counterclockwise flux closures, whose periodicity depends on the PbTiO3 film thickness. In the vicinity of the core, the strain is sufficient to rupture the lattice, with strain gradients up to 10(9) per meter. Engineering strain at the nanoscale may facilitate the development of nanoscale ferroelectric devices.
部门归属	[tang, y. l. ; zhu, y. l. ; ma, x. l. ; wang, w. y. ; wang, y. j. ; xu, y. b. ; zhang, z. d.] chinese acad sci, inst met res, shenyang natl lab mat sci synl, shenyang 110016, peoples r china ; [borisevich, a. y.] oak ridge natl lab, mat sci & technol div, oak ridge, tn 37831 usa ; [morozovska, a. n.] natl acad sci ukraine, inst phys, ua-03028 kiev, ukraine ; [eliseev, e. a.] natl acad sci ukraine, inst problems mat sci, ua-03142 kiev, ukraine ; [pennycook, s. j.] univ tennessee, dept mat sci & engn, knoxville, tn 37996 usa ; [pennycook, s. j.] natl univ singapore, dept mat sci & engn, singapore 117576, singapore
资助者	National Natural Science Foundation of China [51231007, 51171190]; National Basic Research Program of China [2014CB921002, 2009CB623705]; National Academy of Science of the Ukraine; U.S. Department of Energy, Office of Basic Energy Sciences, Materials Sciences and Engineering Division
收录类别	sci
语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/75029
专题	中国科学院金属研究所
通讯作者	xlma@imr.ac.cn
推荐引用方式 GB/T 7714	Tang, Y. L.,Zhu, Y. L.,Ma, X. L.,et al. Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films[J]. SCIENCE,2015,348(6234):547-551.
APA	Tang, Y. L..,Zhu, Y. L..,Ma, X. L..,Borisevich, A. Y..,Morozovska, A. N..,...&xlma@imr.ac.cn.(2015).Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films.SCIENCE,348(6234),547-551.
MLA	Tang, Y. L.,et al."Observation of a periodic array of flux-closure quadrants in strained ferroelectric PbTiO3 films".SCIENCE 348.6234(2015):547-551.