| 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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Redhammer, Günther J.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023A Guideline to Mitigate Interfacial Degradation Processes in Solid‐State Batteries Caused by Cross Diffusioncitations
- 2021Chemical Preintercalation of H2V3O8-reduced Graphene Oxide Composites for Improved Na- and Li-ion Battery Cathodescitations
- 2019Particle Consolidation and Electron Transport in Anatase TiO2 Nanocrystal Filmscitations
- 2019Functionalization of Intergranular Regions inside Alkaline Earth Oxide Nanoparticle derived Ceramics
- 2019Structural and spectroscopic characterization of the brownmillerite-type Ca2Fe2-xGaxO5 solid solution seriescitations
- 2019Proton Bulk Diffusion in Cubic Li7La3Zr2O12 Garnets as Probed by Single X-ray Diffractioncitations
- 2017A neutron diffraction study of crystal and low-temperature magnetic structures within the (Na,Li)FeGe2O6 pyroxene-type solid solution seriescitations
- 2016H-bonding scheme and cation partitioning in axinite: a single-crystal neutron diffraction and Mössbauer spectroscopic studycitations
- 2015Single-crystal neutron diffraction and Mössbauer spectroscopic study of hureaulite, (Mn,Fe)$_5$(PO$_4$)$_2$(HPO$_4$)$_2$(H$_2$O)$_4$citations
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document
Functionalization of Intergranular Regions inside Alkaline Earth Oxide Nanoparticle derived Ceramics
Abstract
There is an increasing awareness in the field of nanocrystalline ceramics that the controlled manipulation of matter with different impurity ions and at an atomic level affects composition, energetics and, thus, the functional properties of constituent grains and grain boundaries. Consequently, a fundamental understanding of impurity segregation and influence of surrounding atmospheres during processing is needed for efficient grain boundary engineering. [1, 2]<br/><br/>We used nanocrystalline powders of MgO with defined concentrations of impurities such as Ba2+-ions as starting material for ceramic processing to study the impact of gas adsorption during nanoparticle processing. The transformation of Ba-functionalized particle surfaces into functional interfaces and grain boundaries was achieved by uniaxial dry pressing and sintering (1373 K).<br/>Using complementary structure analysis techniques (X-ray Diffraction and Transmission Electron Microscopy) we addressed an apparent grain growth effect that occurs at room temperature. The phenomenon was rationalized by the size dependent dissolution properties of Ba-admixed MgO nanoparticles in the presence of water vapor. Electron microscopy measurements on ceramic samples revealed the annealing induced growth and reorganization of particles and grains and the simultaneous formation of a granular microstructure. Photoluminescence emission features that are specific to the surface excitonic properties of highly dispersed alkaline earth oxides were used as a diagnostic tool [3] and could have been retained during consolidation and sintering.<br/>