Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes

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	Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes
	Li, S.; Zhu, Y. L.; Wang, Y. J.; Tang, Y. L.; Liu, Y.; Zhang, S. R.; Ma, J. Y.; Ma, X. L.; Zhu, YL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China.
刊名	AMER INST PHYSICS
	2017-07-31
卷号	111 期号:5 页码:-
ISSN号	0003-6951
英文摘要	Flux-closure domain structures in ferroelectric thin films are considered to have potential applications in electronic devices. It is usually believed that these structures are stabilized by the depolarization field and the contact with electrodes tends to screen the depolarization field and may limit their formation. In this work, the influence of oxide electrodes (SrRuO3 and La0.7Sr0.3MnO3) on the formation of flux-closure domains in PbTiO3 thin films deposited on (110)-oriented GdScO3 substrates by pulsed laser deposition was investigated by Cs-corrected transmission electron microscopy. It is found that periodic flux-closure domain arrays can be stabilized in PbTiO3 films when the top and bottom electrodes are symmetric, while a/c domains appear when asymmetric electrodes are applied. The influence of asymmetric electrodes on the domain configuration is proposed to have a connection with their different work functions and conductivity types. These results are expected to shed light on understanding the nature of flux-closure domains in ferroelectrics and open some research possibilities, such as the evolution of these structures under external electric fields. Published by AIP Publishing.; Flux-closure domain structures in ferroelectric thin films are considered to have potential applications in electronic devices. It is usually believed that these structures are stabilized by the depolarization field and the contact with electrodes tends to screen the depolarization field and may limit their formation. In this work, the influence of oxide electrodes (SrRuO3 and La0.7Sr0.3MnO3) on the formation of flux-closure domains in PbTiO3 thin films deposited on (110)-oriented GdScO3 substrates by pulsed laser deposition was investigated by Cs-corrected transmission electron microscopy. It is found that periodic flux-closure domain arrays can be stabilized in PbTiO3 films when the top and bottom electrodes are symmetric, while a/c domains appear when asymmetric electrodes are applied. The influence of asymmetric electrodes on the domain configuration is proposed to have a connection with their different work functions and conductivity types. These results are expected to shed light on understanding the nature of flux-closure domains in ferroelectrics and open some research possibilities, such as the evolution of these structures under external electric fields. Published by AIP Publishing.
学科主题	Physics, Applied
语种	英语
资助机构	National Natural Science Foundation of China [51571197, 51401212, 51231007, 51501194, 51671194]; National Basic Research Program of China [2014CB921002]; Frontier Sciences CAS [QYZDJ-SSW-JSC010]; Youth Innovation Promotion Association CAS [2016177]
公开日期	2018-01-10
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79174]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhu, YL (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China.
推荐引用方式 GB/T 7714	Li, S.,Zhu, Y. L.,Wang, Y. J.,et al. Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes[J]. AMER INST PHYSICS,2017,111(5):-.
APA	Li, S..,Zhu, Y. L..,Wang, Y. J..,Tang, Y. L..,Liu, Y..,...&Zhu, YL .(2017).Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes.AMER INST PHYSICS,111(5),-.
MLA	Li, S.,et al."Periodic arrays of flux-closure domains in ferroelectric thin films with oxide electrodes".AMER INST PHYSICS 111.5(2017):-.