Room-Temperature Ferroelectricity of Paraelectric Oxides Tailored by Nano-Engineering

doi:10.1021/acsami.2c19944

IMR OpenIR

	Room-Temperature Ferroelectricity of Paraelectric Oxides Tailored by Nano-Engineering
	Liu, Jiaqi 1,2,3; Cao, Yi 1,2,3; Tang, Yun-Long 1,2; Zhu, Yin-Lian 4; Wang, Yujia 1,2; Liu, Nan 1,2,3; Zou, Min-Jie 4; Shi, Tong-Tong 1,2,3; Liu, Fang 1,2,3; Gong, Fenghui 1,2,3; Feng, Yan-Peng 4; Ma, Xiu-Liang 4
通讯作者	Zhu, Yin-Lian(zhuyinlian@sslab.org.cn)
	2023-01-12
发表期刊	ACS APPLIED MATERIALS & INTERFACES
ISSN	1944-8244
页码	8
摘要	Inducing clear ferroelectricity in the quantum para-electric SrTiO3 is important for triggering methods to discover hidden phases in condensed matter physics. Several methods such as isotope substitution and freestanding membranes could introduce ferroelec-tricity in SrTiO3 toward nonvolatile memory applications. However, the stable transformation from quantum paraelectric SrTiO3 to ferroelectricity SrTiO3 at room temperature still remains challenging. Here, we used multiple nano-engineering in (SrTiO3)0.65/(CeO2)0.35 films to achieve an emergent room-temperature ferroelectricity. It is shown that the CeO2 nanocolumns impose large out-of-plane strains and induce Sr/O deficiency in the SrTiO3 matrix to form a clear tetragonal structure, which leads to an apparent room-temperature ferroelectric polarization up to 2.5 mu C/cm2. In collaboration with density functional theory calculations, it is proposed that the compressive strains combined with elemental deficiency give rise to local redistribution of charge density and orbital order, which induce emergent tetragonality of the strained SrTiO3. Our work thus paves a pathway for architecting functional systems in perovskite oxides using a multiple nano-design.
关键词	pulsed laser deposition SrTiO3 CeO2 epitaxial structure room-temperature ferroelectricity nano-engineering strain engineering
资助者	National Natural Science Foundation of China ; Key Research Program of Frontier Sciences CAS ; Shenyang National Laboratory for Materials Science ; Scientific Instrument Developing Project of CAS ; Youth Innovation Promotion Association CAS ; China National Postdoctoral Program for Innovative Talents ; China Postdoctoral Science Foundation
DOI	10.1021/acsami.2c19944
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51971223] ; National Natural Science Foundation of China[51922100] ; National Natural Science Foundation of China[52122101] ; Key Research Program of Frontier Sciences CAS[QYZDJ-SSW-JSC010] ; Shenyang National Laboratory for Materials Science[L2019R06] ; Shenyang National Laboratory for Materials Science[L2019R08] ; Shenyang National Laboratory for Materials Science[L2019F01] ; Shenyang National Laboratory for Materials Science[L2019F13] ; Scientific Instrument Developing Project of CAS[YJKYYQ20200066] ; Youth Innovation Promotion Association CAS[Y202048] ; Youth Innovation Promotion Association CAS[2021187] ; China National Postdoctoral Program for Innovative Talents[BX2021348] ; China Postdoctoral Science Foundation[2021M703455]
WOS研究方向	Science & Technology - Other Topics ; Materials Science
WOS类目	Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000918834800001
出版者	AMER CHEMICAL SOC
引用统计	被引频次：5[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/321006/175318
专题	中国科学院金属研究所
通讯作者	Zhu, Yin-Lian
作者单位	1.Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Inst Met Sci & Technol, Chinese Acad Sci, Shenyang 110016, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 4.Bay Area Ctr Electron Microscopy, Songshan Lake Mat Lab, Dongguan 523808, Peoples R China
推荐引用方式 GB/T 7714	Liu, Jiaqi,Cao, Yi,Tang, Yun-Long,et al. Room-Temperature Ferroelectricity of Paraelectric Oxides Tailored by Nano-Engineering[J]. ACS APPLIED MATERIALS & INTERFACES,2023:8.
APA	Liu, Jiaqi.,Cao, Yi.,Tang, Yun-Long.,Zhu, Yin-Lian.,Wang, Yujia.,...&Ma, Xiu-Liang.(2023).Room-Temperature Ferroelectricity of Paraelectric Oxides Tailored by Nano-Engineering.ACS APPLIED MATERIALS & INTERFACES,8.
MLA	Liu, Jiaqi,et al."Room-Temperature Ferroelectricity of Paraelectric Oxides Tailored by Nano-Engineering".ACS APPLIED MATERIALS & INTERFACES (2023):8.