A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson's Ratio State

doi:10.1002/adfm.201901687

	A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson's Ratio State
	Tang, Yunlong 1; Zhu, Yinlian 1; Ma, Xiuliang1,2 ; Hong, Zijian 3; Wang, Yujia 1; Wang, Wenyuan 1; Xu, Yaobin 1; Liu, Ying 1; Wu, Bo 1; Chen, Lang 3,4
	2019
发表期刊	Advanced Functional Materials
ISSN	1616301X
卷号	29 期号:35
摘要	[111]-Oriented perovskite oxide films exhibit unique interfacial and symmetry breaking effects, which are promising for novel quantum materials as topological insulators and polar metals. However, due to strong polar mismatch and complex structural reconstructions on (111) surfaces/interfaces, it is still challenging to grow high quality [111] perovskite heterostructures, let alone explore the as-resultant physical properties. Here, the fabrication of ultrathin PbTiO3 films grown on a SrTiO3(111) substrate with atomically defined surfaces, by pulsed laser deposition, is reported. High-resolution scanning transmission electron microscopy and X-ray diffraction reveal that the as-grown [111]PbTiO3 films are coherent with the substrate and compressively strained along all in-plane directions. In contrast, the out-of-plane lattices are almost unchanged compared with that of bulk PbTiO3, resulting in a 4% contraction in unit cell volume and a nearly zero Poisson's ratio. Ferroelectric displacement mapping reveals a monoclinic distortion within the compressed [111]PbTiO3, with a polarization larger than 50 µC cm−2. The present findings, as further corroborated by phase field simulations and first principle calculations, differ significantly from the common [001]-oriented films. Fabricating oxide films through [111] epitaxy may facilitate the formation of new phase components and exploration of novel physical properties for future electronic nanodevices. © 2019 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
关键词	Ferroelectric materials Ferroelectricity High resolution transmission electron microscopy Lead titanate Perovskite Poisson ratio Pulsed laser deposition Scanning electron microscopy Strontium titanates Substrates Ultrathin films Electronic nanodevices First principle calculations High resolution scanning transmission electron microscopies monoclinic Perovskite films Phase-field simulation Strain engineering Structural reconstruction
DOI	10.1002/adfm.201901687
收录类别	EI ; 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:000484382300003
出版者	Wiley-VCH Verlag
EI入藏号	20192607106957
EI主题词	Oxide films
EI分类号	482.2 Minerals ; 701.1 Electricity: Basic Concepts and Phenomena ; 708.1 Dielectric Materials ; 741.3 Optical Devices and Systems ; 744.9 Laser Applications ; 804 Chemical Products Generally ; 951 Materials Science
来源库	Compendex
分类代码	482.2 Minerals - 701.1 Electricity: Basic Concepts and Phenomena - 708.1 Dielectric Materials - 741.3 Optical Devices and Systems - 744.9 Laser Applications - 804 Chemical Products Generally - 951 Materials Science
引用统计	被引频次：23[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/115744
专题	材料科学与工程学院材料科学与工程学院_特聘教授组
通讯作者	Ma, Xiuliang; Pennycook, Stephen J.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China; 2.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, Langongping Rd 287, Lanzhou 730050, Gansu, Peoples R China; 3.Penn State Univ, Dept Mat Sci & Engn, University Pk, PA 16802 USA; 4.South Univ Sci & Technol China, Dept Phys, Shenzhen 518055, Peoples R China; 5.Shenzhen Univ, Sch Mat Sci & Engn, Shenzhen 518060, Peoples R China; 6.Harbin Inst Technol, Sch Mat Sci & Engn, Shenzhen 518055, Guangdong, Peoples R China; 7.Natl Univ Singapore, Dept Mat Sci & Engn, Singapore 117576, Singapore
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,Ma, Xiuliang,et al. A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson's Ratio State[J]. Advanced Functional Materials,2019,29(35).
APA	Tang, Yunlong.,Zhu, Yinlian.,Ma, Xiuliang.,Hong, Zijian.,Wang, Yujia.,...&Pennycook, Stephen J..(2019).A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson's Ratio State.Advanced Functional Materials,29(35).
MLA	Tang, Yunlong,et al."A Coherently Strained Monoclinic [111]PbTiO3 Film Exhibiting Zero Poisson's Ratio State".Advanced Functional Materials 29.35(2019).