Year: 2025
Type: article
Abstract: This study explores the ferroelectric domain structure and mechanical properties of PbTiO 3 ‐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 3 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.
Source: Small
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: hybrid
Estimated APC paid: $5,790
Funders: National Science Foundation, Gordon and Betty Moore Foundation, European Commission, National Research Foundation, École Polytechnique Fédérale de Lausanne, Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung, Nederlandse Organisatie voor Wetenschappelijk Onderzoek, National Research Foundation of Korea, European Research Council, Staatssekretariat für Bildung, Forschung und Innovation
Awards: G1438713832, Phase diagram and domain wall properties in PbTiO3 ferroelectric thin films, G447356587, G5599649393, Structural and electronic coupling at oxide interfaces, Controlling superconductivity and magnetism on a chip, G6118095110, G628552264, G6454957321, Laser Cooling of Materials, G993971353
OpenAlex ID: W4414330258