Super-elastic ferroelectric single-crystal membrane with continuous electric dipole rotation
Citations Over TimeTop 1% of 2019 papers
Abstract
Ferroelectrics are usually inflexible oxides that undergo brittle deformation. We synthesized freestanding single-crystalline ferroelectric barium titanate (BaTiO3) membranes with a damage-free lifting-off process. Our BaTiO3 membranes can undergo a ~180° folding during an in situ bending test, demonstrating a super-elasticity and ultraflexibility. We found that the origin of the super-elasticity was from the dynamic evolution of ferroelectric nanodomains. High stresses modulate the energy landscape markedly and allow the dipoles to rotate continuously between the a and c nanodomains. A continuous transition zone is formed to accommodate the variant strain and avoid high mismatch stress that usually causes fracture. The phenomenon should be possible in other ferroelectrics systems through domain engineering. The ultraflexible epitaxial ferroelectric membranes could enable many applications such as flexible sensors, memories, and electronic skins.
Related Papers
- → Robust ferroelectricity in two-dimensional SbN and BiP(2018)120 cited
- → Fluorination Enables Dual Ferroelectricity in Both Solid- and Liquid-Crystal Phases(2023)9 cited
- → Are Mammals Ferroelectric?(2012)1 cited
- Experimental Demonstration of Hybrid Improper Ferroelectric in the Layered Ruddlesden-Popper Compounds(2015)
- → B23-O-08Microstructures in improper ferroelectric compounds revealed by electron microscopy(2015)