| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Ueno, Shintaro
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (8/8 displayed)
- 2024Advancing piezoelectric properties of barium titanate ceramic through AC + DC field poling over Curie temperaturecitations
- 2024Investigation of Ga–Nb co-doped barium strontium titanate ceramics for DC-bias free dielectrics
- 2023Crystal structure of heteroepitaxial BaTiO3–KNbO3 core–shell nanocomposite particles studied by synchrotron radiation X-ray diffractioncitations
- 2023Fabrication of 〈100〉-oriented Bi(Mg0.5Ti0.5)O3-modified BiFeO3-BaTiO3 ceramics and their piezoelectric propertiescitations
- 2023Grain size-independent dielectric and ferroelectric properties of superparaelectric Mn–Nb co-doped barium titanate ceramicscitations
- 2023Lattice strain visualization inside a 400 nm single grain of BaTiO3 in polycrystalline ceramics by Bragg coherent X-ray diffraction imagingcitations
- 2020Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cationscitations
- 2016Electric field induced lattice strain in pseudocubic Bi(Mg1/2Ti1/2)O3-modified BaTiO3-BiFeO3 piezoelectric ceramicscitations
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article
Piezoelectricity in perovskite-type pseudo-cubic ferroelectrics by partial ordering of off-centered cations
Abstract
<jats:title>Abstract</jats:title><jats:p>A large piezoelectric response in ferroelectric ceramics is typically associated with extrinsic contributions from ferroelectric domain structures. However, such domain structures cannot be expected in systems with pseudo-cubic symmetry. In this study, we determine the mechanism of significant piezoelectricity and ferroelectricity in 0.3BaTiO<jats:sub>3</jats:sub>–0.1Bi(Mg<jats:sub>1/2</jats:sub>Ti<jats:sub>1/2</jats:sub>)O<jats:sub>3</jats:sub>–0.6BiFeO<jats:sub>3</jats:sub> ceramic with a perovskite-type pseudo-cubic symmetry. Synchrotron radiation X-ray diffraction reveals that the Bi ions in this ceramic essentially prefer to be off-centered at six sites by approximately 0.4 Å, in the cubic <100> directions. A phase transition occurs at <jats:italic>T</jats:italic><jats:sub>C</jats:sub> ~725 K. However, the crystal seems to present a cubic symmetry even at room temperature. The large piezoelectric response is caused by the combinational partial ordering of the off-centered Bi ions, adapted to any direction of the applied electric field to the ceramic grains. The proposed mechanism for the emergence of a high polarization in the above system will enable designing novel Pb-free ceramics by controlling the fluctuated and off-centered ions under an applied electric field.</jats:p>