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Remarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes
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Remarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes
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Remarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes
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Journal Article
Remarkable flexibility in freestanding single-crystalline antiferroelectric PbZrO3 membranes
2024
Overview
The ultrahigh flexibility and elasticity achieved in freestanding single-crystalline ferroelectric oxide membranes have attracted much attention recently. However, for antiferroelectric oxides, the flexibility limit and fundamental mechanism in their freestanding membranes are still not explored clearly. Here, we successfully fabricate freestanding single-crystalline PbZrO
3
membranes by a water-soluble sacrificial layer technique. They exhibit good antiferroelectricity and have a commensurate/incommensurate modulated microstructure. Moreover, they also have good shape recoverability when bending with a small radius of curvature (about 2.4 μm for the thickness of 120 nm), corresponding to a bending strain of 2.5%. They could tolerate a maximum bending strain as large as 3.5%, far beyond their bulk counterpart. Our atomistic simulations reveal that this remarkable flexibility originates from the antiferroelectric-ferroelectric phase transition with the aid of polarization rotation. This study not only suggests the mechanism of antiferroelectric oxides to achieve high flexibility but also paves the way for potential applications in flexible electronics.
Authors find that freestanding single crystalline antiferroelectric PbZrO
3
membranes exhibit remarkable flexibility that can endure a maximum bending strain of 3.5%, with the assistance of mechanical-induced antiferroelectric-ferroelectric phase transition.
