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dc.creatorWang, Hong
dc.creatorWen, Jianguo
dc.creatorMiller, Dean J.
dc.creatorZhou, Qibin
dc.creatorChen, Mohan
dc.creatorLee, Ho Nyung
dc.creatorRabe, Karin M.
dc.creatorWu, Xifan
dc.date.accessioned2023-06-22T15:11:36Z
dc.date.available2023-06-22T15:11:36Z
dc.date.issued2016-03-14
dc.identifier.issn2160-3308
dc.identifier.doihttp://dx.doi.org/10.34944/dspace/8742
dc.identifier.urihttp://hdl.handle.net/20.500.12613/8778
dc.description.abstractIn ABO3 perovskites, oxygen octahedron rotations are common structural distortions that can promote large ferroelectricity in BiFeO3 with an R3c structure [1] but suppress ferroelectricity in CaTiO3 with a Pbnm symmetry [2]. For many CaTiO3-like perovskites, the BiFeO3 structure is a metastable phase. Here, we report the stabilization of the highly polar BiFeO3-like phase of CaTiO3 in a BaTiO3/CaTiO3 superlattice grown on a SrTiO3 substrate. The stabilization is realized by a reconstruction of oxygen octahedron rotations at the interface from the pattern of nonpolar bulk CaTiO3 to a different pattern that is characteristic of a BiFeO3 phase. The reconstruction is interpreted through a combination of amplitude-contrast sub-0.1-nm high-resolution transmission electron microscopy and first-principles theories of the structure, energetics, and polarization of the superlattice and its constituents. We further predict a number of new artificial ferroelectric materials demonstrating that nonpolar perovskites can be turned into ferroelectrics via this interface mechanism. Therefore, a large number of perovskites with the CaTiO3 structure type, which include many magnetic representatives, are now good candidates as novel highly polar multiferroic materials [3].
dc.format.extent8 pages
dc.languageEnglish
dc.language.isoeng
dc.relation.ispartofFaculty/ Researcher Works
dc.relation.haspartPhysical Review X, Vol. 6
dc.relation.isreferencedbyAmerican Physical Society
dc.rightsAttribution CC BY
dc.rights.urihttp://creativecommons.org/licenses/by/3.0
dc.subjectMaterials science
dc.subjectFerroelectricity
dc.titleStabilization of Highly PolarBiFeO3-like Structure: A New Interface Design Route for Enhanced Ferroelectricity in Artificial Perovskite Superlattices
dc.typeText
dc.type.genreJournal article
dc.description.departmentPhysics
dc.relation.doihttps://doi.org/10.1103/physrevx.6.011027
dc.ada.noteFor Americans with Disabilities Act (ADA) accommodation, including help with reading this content, please contact scholarshare@temple.edu
dc.description.schoolcollegeTemple University. College of Science and Technology
dc.temple.creatorWang, Hongwei
dc.temple.creatorWu, Xifan
refterms.dateFOA2023-06-22T15:11:36Z


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