| 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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Tinti, Victor Buratto
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2024Assessment of High-Temperature Oxidation Properties of 316L Stainless Steel Powder and Sintered Porous Supports for Potential Solid Oxide Cells Applicationscitations
- 2024Oxygen-defective electrostrictors for soft electromechanicscitations
- 2024Oxygen-defective electrostrictors for soft electromechanicscitations
- 2024Non-classical electrostriction in calcium-doped cerium oxide ceramicscitations
- 2024Non-classical electrostriction in calcium-doped cerium oxide ceramicscitations
- 2024Enhanced Mechanical and Electromechanical Properties of Compositionally Complex Zirconia Zr 1- x (Gd 1/5 Pr 1/5 Nd 1/5 Sm 1/5 Y 1/5 ) x O 2-δ Ceramicscitations
- 2024Enhanced Mechanical and Electromechanical Properties of Compositionally Complex Zirconia Zr1-x(Gd1/5Pr1/5Nd1/5Sm1/5Y1/5)xO2-δ Ceramicscitations
- 2021Low-temperature synthesis of bismuth titanate by modified citrate amorphous methodcitations
- 2021Gigantic electro-chemo-mechanical properties of nanostructured praseodymium doped ceriacitations
Places of action
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article
Gigantic electro-chemo-mechanical properties of nanostructured praseodymium doped ceria
Abstract
Some oxygen defective fluorites are non-Newnham electrostrictors, <em>i.e.</em>,the electromechanical response does not depend on their dielectricproperties. Here, we show gigantic electrostriction in nanocrystalline25 mol% praseodymium doped ceria (PCO) bulk ceramics. The material wasfabricated with a field-assisted spark plasma sintering (SPS) processfrom high-purity nanoscale PCO powders (<20 nm). The SPS processconsolidates the powders into a single-phase, highly dense material witha homogeneous microstructure and large grain boundary extension.Various thermally and chemically stable ionic defects are incorporatedinto the nanostructure, leading to superior electrical conductivity. Thematerial shows an electrostriction strain coefficient (<em>M</em><sub>33</sub>) of ∼10<sup>−16</sup> m<sup>2</sup> V<sup>−2</sup>at frequencies below 100 Hz at room temperature. Such performance iscomparable and even superior to Newnham's electrostrictors, such asferroelectric ceramics and polymeric actuators. Comparative analysiswith polycrystals suggests that nanostructured PCO possesseselectromechanically active nanodomains of Pr<sup>3+</sup>–V<sub>O</sub> pairs. Such results are unexpected and open novel insights on non-Newnham electrostrictors.