Curvature‐Controlled Polarization in Adaptive Ferroelectric Membranes

Article Article scientifique Article Curvature‐Controlled Polarization in Adaptive Ferroelectric Membranes eng 2025-09-18 author Segantini Greta https://orcid.org/0000-0003-3648-2569 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 416753 Département de physique de la matière quantique (FIMAC) author Tovaglieri Ludovica https://orcid.org/0009-0009-3226-3888 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 931924 Département de physique de la matière quantique (FIMAC) author Roh Chang-Jae https://orcid.org/0009-0009-0369-0311 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 416201 Département de physique de la matière quantique (FIMAC) author Hsu Chih-Ying https://orcid.org/0000-0001-7141-3046 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 407616 Département de physique de la matière quantique (FIMAC) author Cho Seongwoo https://orcid.org/0000-0002-3000-4251 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 937927 Département de physique de la matière quantique (FIMAC) author Bulanadi Ralph Adam Yap https://orcid.org/0000-0002-6779-4031 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 919581 author Ondrejkovic Petr https://orcid.org/0000-0001-8542-0685 Institute of Physics of the Czech Academy of Sciences Na Slovance 2 Praha 8 18200 Czech Republic author Marton Pavel https://orcid.org/0000-0001-7273-7288 Institute of Physics of the Czech Academy of Sciences Na Slovance 2 Praha 8 18200 Czech Republic author Hlinka Jirka https://orcid.org/0000-0002-9293-4462 Institute of Physics of the Czech Academy of Sciences Na Slovance 2 Praha 8 18200 Czech Republic author Gariglio Stefano https://orcid.org/0000-0001-8263-4506 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 508404 Département de physique de la matière quantique (FIMAC) author Alexander Duncan T.L. https://orcid.org/0000-0003-4350-8587 Electron Spectrometry and Microscopy Laboratory (LSME) Institute of Physics (IPHYS) Ecole Polytechnique Fédérale de Lausanne (EPFL) Lausanne CH‐1015 Switzerland author Paruch Patrycja https://orcid.org/0000-0001-7799-6721 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 126293 Département de physique de la matière quantique (FIMAC) author Triscone Jean-Marc https://orcid.org/0000-0002-9067-701X Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 21933 Département de physique de la matière quantique (FIMAC) author Lichtensteiger Céline https://orcid.org/0000-0002-9796-8071 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 504589 Département de physique de la matière quantique (FIMAC) author Caviglia Andrea https://orcid.org/0000-0001-9650-3371 Department of Quantum Matter Physics University of Geneva 24 Quai Ernest‐Ansermet Geneva 4 CH‐1211 Switzerland 650026 Département de physique de la matière quantique (FIMAC) e06338 10.1002/smll.202506338 1613-6810 https://onlinelibrary.wiley.com/doi/10.1002/smll.202506338 This study explores the ferroelectric domain structure and mechanical properties of PbTiO <sub>3</sub> ‐based membranes, which develop a well‐ordered and crystallographic‐oriented ripple pattern upon release from their growth substrate. The ferrolectric domain structure of the PbTiO <sub>3</sub> layer is examined at various length scales using optical second harmonic generation, piezoresponse force microscopy, and scanning transmission electron microscopy. These methods reveal the presence of purely in‐plane domains organized into superdomains at the crest of the ripples, while an in‐plane/out‐of‐plane domain structure is observed in the flat regions separating the ripples, in agreement with phase‐field simulations. The mechanical properties of the membranes are assessed using contact resonance force microscopy, which identifies a distinct mechanical behavior at the ripples compared to the flat regions. This study shows that the physical properties of the ferroelectric layer in membranes can be locally controlled within an ordered array of ripples with well‐defined geometric characteristics. Dewey 500.2 Staatssekretariat für Bildung, Forschung und Innovation MB22.00071 Gordon and Betty Moore Foundation 332 GBMF10451 National Research Foundation of Korea RS‐2024‐00413670 Swiss National Science Foundation Structural and electronic coupling at oxide interfaces 207338 CH Projects Netherlands Organisation for Scientific Research (NWO) Controlling superconductivity and magnetism on a chip 016.Vidi.189.061 NL NWO-Talentprogramma Vidi ENW 2017 33 Département de physique de la matière quantique 131 false 1382 Groupe Caviglia 784 Groupe Triscone 786 Groupe Paruch Small 0a7efcb2-9aa8-4629-a113-e0926417b86b Article (Published version) Public file.pdf 5393544 application/pdf CC BY-4.0 934daf7bb68bf60b1d495cbb2b55d3d89b2aac9daeff9eaf0222da908caf8bbf openAccess Faculté des sciences / Section de physique / Département de physique de la matière quantique

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