Periodic Polarization Waves in a Strained, Highly Polar Ultrathin SrTiO3

doi:10.1021/acs.nanolett.1c02117

	Periodic Polarization Waves in a Strained, Highly Polar Ultrathin SrTiO3
	Tang, Yunlong 1; Zhu, Yinlian 1,2; Wu, Bo 2; Wang, Yujia 1; Yang, Lixin 1; Feng, Yanpeng 2,3; Zou, Minjie 2,3; Geng, Wanrong 2,3; Ma, Xiuliang1,4
	2021-07-28
发表期刊	NANO LETTERS
ISSN	1530-6984
卷号	21 期号:14 页码:6274-6281
摘要	SrTiO3 is generally paraelectric with centrosymmetric structure exhibiting unique quantum fluctuation related ferroelectricity. Here we reveal highly polar and periodic polarization waves in SrTiO3 at room temperature, which is stabilized by periodic tensile strains in a sandwiched PbTiO3/SrTiO3/PbTiO3 structure. Scanning transmission electron microscopy reveals that periodic a/c domain structures in PbTiO3 layers exert unique periodic tensile strains in the ultrathin SrTiO3 layer and consequently make the highly polar and periodic states of SrTiO3. The as-received polar SrTiO3 layer features peak polar ion displacement of similar to 0.01 nm and peak tetragonality of similar to 1.07. These peak values are larger than previous results, which are comparable to that of bulk ferroelectric PbTiO3. Our results suggest that it is possible to integrate large and periodic strain state in oxide films with exotic properties, which in turn could be useful in optical applications and information addressing when used as memory unit.
关键词	Polar SrTiO3 large tetragonality periodically strain engineering atomic scale
DOI	10.1021/acs.nanolett.1c02117
收录类别	EI ; SCOPUS ; SCIE
语种	英语
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS记录号	WOS:000679930400048
出版者	AMER CHEMICAL SOC
EI入藏号	20213110693981
EI主题词	Titanium compounds
EI分类号	701.1 Electricity: Basic Concepts and Phenomena - 741.3 Optical Devices and Systems - 804 Chemical Products Generally - 931.1 Mechanics
来源库	WOS
引用统计	被引频次：11[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	https://ir.lut.edu.cn/handle/2XXMBERH/148519
专题	材料科学与工程学院_特聘教授组
通讯作者	Ma, Xiuliang
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China; 2.Songshan Lake Mat Lab, Dongguan 523808, Guangdong, Peoples R China; 3.Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China; 4.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Lanzhou 730050, Peoples R China
通讯作者单位	省部共建有色金属先进加工与再利用国家重点实验室
推荐引用方式 GB/T 7714	Tang, Yunlong,Zhu, Yinlian,Wu, Bo,et al. Periodic Polarization Waves in a Strained, Highly Polar Ultrathin SrTiO3[J]. NANO LETTERS,2021,21(14):6274-6281.
APA	Tang, Yunlong.,Zhu, Yinlian.,Wu, Bo.,Wang, Yujia.,Yang, Lixin.,...&Ma, Xiuliang.(2021).Periodic Polarization Waves in a Strained, Highly Polar Ultrathin SrTiO3.NANO LETTERS,21(14),6274-6281.
MLA	Tang, Yunlong,et al."Periodic Polarization Waves in a Strained, Highly Polar Ultrathin SrTiO3".NANO LETTERS 21.14(2021):6274-6281.