2024
DOI: 10.1021/acsami.3c18721
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Novel Route for Enhancing Piezoelectricity of Ferroelectric Films: Controlling Nontrivial Polarization States in Pb(Zr, Ti)O3 Monodomain Superlattice Structure

Jundong Song,
Youhei Ebihara,
Petr Yudin
et al.

Abstract: Artificial superlattice films made of Pb(Zr 0.4 Ti 0.6 )O 3 and Pb(Zr 0.6 Ti 0.4 )O 3 were investigated for their polarization states and piezoelectric properties theoretically and experimentally in this study. The developed theory predicts nontrivial polarization along neither [001] nor [111] directions in (111)-epitaxial monodomain superlattice films with uniform compressive strain. Such films were achieved via pulsed laser deposition. When the layer thickness is reduced to 3 nm, d 33 becomes 128 ± 3.8 pm/V… Show more

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