131341 20260217205452.0 doi 10.1063/5.0174793 sideral 136797 ART-2024-136797 eng Koutsogiannis, Panagiotis Engineering polar distortions in multiferroic Sr1-xBaxMnO3-d thin films 2024 Access copy available to the general public Unrestricted The physical properties of perovskite oxide thin films are governed by the subtle interplay between chemical composition and crystal symmetry variations, which can be altered by epitaxial growth. In the case of perovskite-type multiferroic thin films, precise control of stoichiometry and epitaxial strain allows for gaining control over the ferroic properties through selective crystal distortions. Here, we demonstrate the chemical tailoring of the polar atomic displacements by tuning the stoichiometry of multiferroic Sr1−xBaxMnO3−δ (0 ≤ x ≤ 0.5) epitaxial thin films. A combination of x-ray diffraction and aberration-corrected scanning transmission electron microscopy enables unraveling the local polarization orientation at the nanoscale as a function of the film’s composition and induced crystalline structure. We demonstrate experimentally that the orientation of polarization is intimately linked to the Ba doping and O stoichiometry of the films and, with the biaxial strain induced by the substrate, it can be tuned either in-plane or out-of-plane with respect to the substrate by the appropriate choice of the post-growth annealing temperature and O2 atmosphere. This chemistry-mediated engineering of the polarization orientation of oxide thin films opens new venues for the design of functional multiferroic architectures and the exploration of novel physics and applications of ferroelectric textures with exotic topological properties. info:eu-repo/grantAgreement/ES/DGA/E13-23R info:eu-repo/grantAgreement/ES/DGA-FEDER E28-23R info:eu-repo/grantAgreement/EC/H2020/ 861153/EU/Materials for Neuromorphic Circuits/MANIC This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 861153-MANIC info:eu-repo/grantAgreement/EC/H2020/823717/EU/Enabling Science and Technology through European Electron Microscopy/ESTEEM3 This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 823717-ESTEEM3 info:eu-repo/grantAgreement/ES/MICINN-FEDER/PID2020-112914RB-I00 info:eu-repo/semantics/openAccess by https://creativecommons.org/licenses/by/4.0/deed.es 4.5 2024 MATERIALS SCIENCE, MULTIDISCIPLINARY 169 / 461 = 0.367 2024 Q2 T2 NANOSCIENCE & NANOTECHNOLOGY 65 / 147 = 0.442 2024 Q2 T2 PHYSICS, APPLIED 53 / 187 = 0.283 2024 Q2 T1 1.124 2024 Materials Science (miscellaneous) 2024 Q1 Engineering (miscellaneous) 2024 Q1 7.9 2024 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Algarabel, Pedro A. (orcid)0000-0002-4698-3378 Pardo, José A. Universidad de Zaragoza (orcid)0000-0002-0111-8284 Magén, César (orcid)0000-0002-6761-6171 5001 065 Universidad de Zaragoza Dpto. Ciencia Tecnol.Mater.Fl. Área Cienc.Mater. Ingen.Metal. 12, 1 (2024), [11 pp.] APL mater. APL Materials 2166-532X 10624708 http://zaguan.unizar.es/record/131341/files/texto_completo.pdf Versión publicada 816830 http://zaguan.unizar.es/record/131341/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:131341 articulos driver 2026-02-17-20:19:25 ARTICLE