| 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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Porz, Lukas
Norwegian University of Science and Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Blacklight sintering of garnet-based composite cathodes
- 2023Deflecting Dendrites by Introducing Compressive Stress in Li7La3Zr2O12 Using Ion Implantationcitations
- 2023Deflecting Dendrites by Introducing Compressive Stress in Li7La3Zr2O12 Using Ion Implantation ; ENEngelskEnglishDeflecting Dendrites by Introducing Compressive Stress in Li7La3Zr2O12 Using Ion Implantationcitations
- 2023Effect of pulse-current-based protocols on the lithium dendrite formation and evolution in all-solid-state batteriescitations
- 2022Lithium Metal Penetration Induced by Electrodeposition through Solid Electrolytes: Example in Single-Crystal Li6La3ZrTaO12 Garnet
- 2022Microstructure and conductivity of blacklight‐sintered TiO<sub>2</sub>, YSZ, and Li<sub>0.33</sub>La<sub>0.57</sub>TiO<sub>3</sub>citations
- 2022High-temperature plastic deformation of ⟨110⟩-oriented BaTiO 3 single crystalscitations
- 2022Enhanced photoconductivity at dislocations in SrTiO 3citations
- 2021Dislocation-toughened ceramicscitations
- 2021Nanoindentation pop‐in in oxides at room temperature: Dislocation activation or crack formation?citations
- 2020High temperature creep-mediated functionality in polycrystalline barium titanatecitations
- 2018Lithium metal penetration induced by electrodeposition through solid electrolytes: Example in single-crystal Li6La3ZrTaO12 garnet
- 2017Mechanism of Lithium Metal Penetration through Inorganic Solid Electrolytescitations
Places of action
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article
Nanoindentation pop‐in in oxides at room temperature: Dislocation activation or crack formation?
Abstract
<jats:title>Abstract</jats:title><jats:p>Most oxide ceramics are known to be brittle macroscopically at room temperature with little or no dislocation‐based plasticity prior to crack propagation. Here, we demonstrate the size‐dependent brittle to ductile transition in SrTiO<jats:sub>3</jats:sub> at room temperature using nanoindentation pop‐in events visible as a sudden increase in displacement at nominally constant load. We identify that the indentation pop‐in event in SrTiO<jats:sub>3</jats:sub> at room temperature, below a critical indenter tip radius, is dominated by dislocation‐mediated plasticity. When the tip radius increases to a critical size, concurrent dislocation activation and crack formation, with the latter being the dominating process, occur during the pop‐in event. Beyond the experimental examination and theoretical justification presented on SrTiO<jats:sub>3</jats:sub> as a model system, further validation on α‐Al<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub>, BaTiO<jats:sub>3</jats:sub>, and TiO<jats:sub>2</jats:sub> are briefly presented and discussed. A new indentation size effect, mainly for brittle ceramics, is suggested by the competition between the dislocation‐based plasticity and crack formation at small scale. Our finding complements the deformation mechanism in the nano‐/microscale deformation regime involving plasticity and cracking in ceramics at room temperature to pave the road for dislocation‐based mechanics and functionalities study in these materials.</jats:p>