| 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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Kutsal, Mustafacan
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2024Microstructure and stress mapping in 3D at industrially relevant degrees of plastic deformationcitations
- 2024Microstructure and stress mapping in 3D at industrially relevant degrees of plastic deformationcitations
- 2024Microstructure and stress mapping in 3D at industrially relevant degrees of plastic deformationcitations
- 2023Exploring 4D microstructural evolution in a heavily deformed ferritic alloycitations
- 2022High-resolution 3D X-ray diffraction microscopy: 3D mapping of deformed metal microstructurescitations
- 2022High-resolution 3D X-ray diffraction microscopy: 3D mapping of deformed metal microstructurescitations
- 2022Multiscale Exploration of Texture and Microstructure Development in Recrystallization Annealing of Heavily Deformed Ferritic Alloyscitations
- 20224D microstructural evolution in a heavily deformed ferritic alloycitations
- 2021Bulk heterogeneity in barium titanate above the Curie temperaturecitations
- 2020Dark-field X-ray microscopy reveals mosaicity and strain gradients across sub-surface TiC and TiN particles in steel matrix compositescitations
Places of action
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article
Bulk heterogeneity in barium titanate above the Curie temperature
Abstract
We use dark-field x-ray microscopy to reveal evidence of subtle structural heterogeneity in BaTiO3 single crystals at temperatures of 150 °C—well above the Curie temperature of 125 °C. The heterogeneity exhibits domain-like ordering on the scale of several micrometers, pronounced curvature, and a preference for ⟨110⟩ lattice directions. Complementary high-resolution x-ray reciprocal space measurements suggest that the features originate from point defects (most likely oxygen vacancies) that coalesce along pre-existing domain walls during aging. A simple thermodynamic model suggests that the weak elastic strains associated with the heterogeneity are likely to locally raise the Curie temperature in their vicinity, creating nucleation sites for the ferroelectric phase upon cooling through the ferroelectric phase transition.