Hierarchical domain structures in buckled ferroelectric free sheets
Pesquera, David ; Cordero-Edwards, Kumara ; Checa, Marti ; Ivanov, Ilia ; Casals, Blai ; Rosado, Marcos ; Caicedo, José Manuel ; Casado-Zueras, Laura ; Pablo-Navarro, Javier ; Magén, César ; Santiso, José ; Domingo, Neus ; Catalan, Gustau ; Sandiumenge, Felip
Resumen: Flat elastic sheets tend to display wrinkles and folds. From pieces of clothing down to two-dimensional crystals, these corrugations appear in response to strain generated by sheet compression or stretching, thermal or mechanical mismatch with other elastic layers, or surface tension. Extensively studied in metals, polymers and, — more recently — in van der Waals exfoliated layers, with the advent of thin single crystal freestanding films of complex oxides, researchers are now paying attention to novel microstructural effects induced by bending ferroelectric-ferroelastics, where polarization is strongly coupled to lattice deformation. Here we show that wrinkle undulations in BaTiO3 sheets bonded to a viscoelastic substrate transform into a buckle delamination geometry when transferred onto a rigid substrate. Using spatially resolved techniques at different scales (Raman, scanning probe and electron microscopy), we show how these delaminations in the free BaTiO3 sheets display a self-organization of ferroelastic domains along the buckle profile that strongly differs from the more studied sinusoidal wrinkle geometry. Moreover, we disclose the hierarchical distribution of a secondary set of domains induced by the misalignment of these folding structures from the preferred in-plane crystallographic orientations. Our results disclose the relevance of the morphology and orientation of buckling instabilities in ferroelectric free sheets, for the stabilization of different domain structures, pointing to new routes for domain engineering of ferroelectrics in flexible oxide sheets.
Idioma: Inglés
DOI: 10.1016/j.actamat.2025.121080
Año: 2025
Publicado en: Acta Materialia 293 (2025), 121080 [9 p.]
ISSN: 1359-6454
Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/EC/H2020/823713/EU/Fibre Reinforced thermoplAstics Manufacturing for stiffEned, complex, double curved Structures./FRAMES
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2020-112914RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2021-001214-S
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2023-147211OB-C22
Financiación: info:eu-repo/grantAgreement/ES/MINECOPID2022-140589NB-100
Tipo y forma: Article (Published version)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes.
Exportado de SIDERAL (2025-10-17-14:32:54)
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Idioma: Inglés
DOI: 10.1016/j.actamat.2025.121080
Año: 2025
Publicado en: Acta Materialia 293 (2025), 121080 [9 p.]
ISSN: 1359-6454
Financiación: info:eu-repo/grantAgreement/ES/AEI/CEX2023-001263-S
Financiación: info:eu-repo/grantAgreement/ES/DGA/E13-23R
Financiación: info:eu-repo/grantAgreement/EC/H2020/823713/EU/Fibre Reinforced thermoplAstics Manufacturing for stiffEned, complex, double curved Structures./FRAMES
Financiación: info:eu-repo/grantAgreement/ES/MICINN-AEI/PID2020-112914RB-I00
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2021-001214-S
Financiación: info:eu-repo/grantAgreement/ES/MICINN/CEX2023-001286-S
Financiación: info:eu-repo/grantAgreement/ES/MICINN/PID2023-147211OB-C22
Financiación: info:eu-repo/grantAgreement/ES/MINECOPID2022-140589NB-100
Tipo y forma: Article (Published version)
You must give appropriate credit, provide a link to the license, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use. You may not use the material for commercial purposes. Exportado de SIDERAL (2025-10-17-14:32:54)
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Record created 2025-05-30, last modified 2025-10-17