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Effects of anisotropic misfit strains on equilibrium phases and domain structures in (111)-oriented ferroelectric PbTiO3 films
Guo, X. W.1,2; Zou, M. J.1,2; Wang, Y. J.1; Tang, Y. L.1; Zhu, Y. L.1; Ma, X. L.1,3
Corresponding AuthorWang, Y. J.(yjwang@imr.ac.cn)
2021-03-01
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume206Pages:10
AbstractAdvances in high-index-oriented ferroelectric films offer the exciting possibility of utilizing strain engineering to tune the desired properties related to the nanostructures. Previous studies often considered ferroelectric films grown on cubic substrates (isotropic strain), while the effects of anisotropic strains introduced by orthorhombic substrates are still not well understood. In our recent work, we grew (111)-oriented PbTiO3 (PTO) films on orthorhombic GdScO3 substrates and studied the domain structure evolution with film thickness. However, the theoretical understanding is lacking. In this work, the physical mechanism of the formation and evolution of domain structures was clearly revealed from the viewpoint of energy competition. Moreover, through the stereographic projection (SP) analysis of polarization vectors, a wide variety of ferroelectric phases for (111)-oriented PTO films under anisotropic strains were identified, and the misfit strain-misfit strain domain stability diagram was then constructed at room temperature. It was indicated that anisotropic misfit strains not only lead to the separation of ferroelectric domain variants that could co-exist under isotropic strain states for tetragonal-like d and monoclinic ma phases, but also stabilize the monoclinic mb phase. Their representative domain morphologies with separated domain variants under different anisotropic strains were analyzed in detail. These results provide guidance for interpreting and understanding more experimental data as well as the designing of (111)-oriented epitaxial ferroelectrics under anisotropic strains. (C) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
KeywordPhase-field simulations Domain stability diagram (111)-oriented Anisotropic misfit strains
Funding OrganizationKey Research Program of Frontier Sciences CAS ; National Natural Science Foundation of China ; Shenyang National Laboratory for Materials Sciences ; Natural Science Foundation of the Liaoning province ; Youth Innovation Promotion Association CAS
DOI10.1016/j.actamat.2021.116639
Indexed BySCI
Language英语
Funding ProjectKey Research Program of Frontier Sciences CAS[QYZDJ-SSW-JSC010] ; National Natural Science Foundation of China[51671194] ; National Natural Science Foundation of China[51571197] ; National Natural Science Foundation of China[51971223] ; National Natural Science Foundation of China[51922100] ; Shenyang National Laboratory for Materials Sciences[L2019R06] ; Shenyang National Laboratory for Materials Sciences[L2019R08] ; Shenyang National Laboratory for Materials Sciences[L2019F01] ; Shenyang National Laboratory for Materials Sciences[L2019F13] ; Natural Science Foundation of the Liaoning province[2020-MS002] ; Youth Innovation Promotion Association CAS[2016177]
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000620252300052
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/160430
Collection中国科学院金属研究所
Corresponding AuthorWang, Y. J.
Affiliation1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
3.Lanzhou Univ Technol, State Key Lab Adv Proc & Recycling Nonferrous Met, 287 Langongping Rd, Lanzhou 730050, Peoples R China
Recommended Citation
GB/T 7714
Guo, X. W.,Zou, M. J.,Wang, Y. J.,et al. Effects of anisotropic misfit strains on equilibrium phases and domain structures in (111)-oriented ferroelectric PbTiO3 films[J]. ACTA MATERIALIA,2021,206:10.
APA Guo, X. W.,Zou, M. J.,Wang, Y. J.,Tang, Y. L.,Zhu, Y. L.,&Ma, X. L..(2021).Effects of anisotropic misfit strains on equilibrium phases and domain structures in (111)-oriented ferroelectric PbTiO3 films.ACTA MATERIALIA,206,10.
MLA Guo, X. W.,et al."Effects of anisotropic misfit strains on equilibrium phases and domain structures in (111)-oriented ferroelectric PbTiO3 films".ACTA MATERIALIA 206(2021):10.
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