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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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Kabir, Ahsanul
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (18/18 displayed)
- 2024Assessment of High-Temperature Oxidation Properties of 316L Stainless Steel Powder and Sintered Porous Supports for Potential Solid Oxide Cells Applicationscitations
- 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
- 2021Low-temperature synthesis of bismuth titanate by modified citrate amorphous methodcitations
- 2021Gigantic electro-chemo-mechanical properties of nanostructured praseodymium doped ceriacitations
- 2021Gigantic electro-chemo-mechanical properties of nanostructured praseodymium doped ceriacitations
- 2020Effect of Cold Sintering Process (CSP) on the Electro-Chemo-Mechanical Properties of Gd-doped Ceria (GDC)citations
- 2020Steady Non-classical Giant Electrostriction in Calcium Doped Cerium Oxide
- 2020Enhanced Electromechanical Response in Sm and Nd Co-doped Ceriacitations
- 2020The role of oxygen defects on the electro-chemo-mechanical properties of highly defective gadolinium doped ceriacitations
- 2020Tuning the electro-chemo-mechanical properties in defective cerium oxides
- 2020Non-classical electrostrictive response in bulk ceria: tailoring by microstructure and defect chemistry
- 2020Tunable Giant Electromechanical Properties in Defective Co-doped Ceria Systems
- 2019Effect of oxygen defects blocking barriers on gadolinium doped ceria (GDC) electro-chemo-mechanical propertiescitations
- 2019Microstructure Forging of Electromechanically Active Bulk Ceria
Places of action
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conferencepaper
Steady Non-classical Giant Electrostriction in Calcium Doped Cerium Oxide
Abstract
In recent times, rare-earth-doped cerium oxides, e.g. Gd-doped ceria have shown giant electrostriction that are orders of magnitude higher than known inorganic electrostrictors. This non-classical electrostriction is fundamentally independent of Newnham's scaling law and is functioned with the existence of oxygen vacancies (Vo) in the host lattice, associated with Ce-Vo pairs. Here, electro-chemo-mechanical properties of highly defective calcium doped ceria (CDC) ceramics, with variously doping levels (Ce<sub>0.9</sub>Ca<sub>x</sub>O<sub>2-x</sub>,x = 0.025-0.15) are investigated. As expected, CDC samples display rather different electrochemical properties depending on a vacancy concentration and microstructure. They reveal primary creep at room temperature, emphasizing an unexpected anelasticity in ceria. The electrostrictive effect describes being independent of either the nominal vacancy concentration or the related blocking effects at the grain boundary, exhibiting a high electrostriction coefficient (M<sub>33</sub>) in order of ≈ 10<sup>-18 </sup>m<sup>2</sup>V<sup>-2</sup> in a wide range of frequency. Remarkably, electrostriction show neither strain saturation nor relaxation with field amplitude and frequencies, respectively. These key findings unveil a new form of electromechanical response in ceria that is independent of composition fluctuations and dominated by strong columbic and elastic energy of Ca<sup>2+</sup>- Vo pairs.