| 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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Dupraz, Maxime
Institut Néel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (12/12 displayed)
- 2021Twin boundary migration in an individual platinum nanocrystal during catalytic CO oxidationcitations
- 2021Deciphering the interactions between single arm dislocation sources and coherent twin boundary in nickel bi-crystalcitations
- 2021A convolutional neural network for defect classification in Bragg coherent X-ray diffractioncitations
- 2020Mapping Inversion Domain Boundaries along Single GaN Wires with Bragg Coherent X-ray Imagingcitations
- 2020Mapping inversion domain boundaries along single GaN wires with Bragg coherent X-ray imagingcitations
- 2020Mapping inversion domain boundaries along single GaN wires with Bragg coherent X-ray imagingcitations
- 2020Bragg Coherent Imaging of nanoprecipitates: role of superstructure reflections ; Imagerie par diffraction des rayons X cohérents de nanoprécipités: rôle des réflexions de surstructure
- 2020Bragg coherent imaging of nanoprecipitates: role of superstructure reflectionscitations
- 2019Enhanced precipitate growth at reduced temperatures during chemical ordering in deformed red gold alloyscitations
- 20173D imaging of a dislocation loop at the onset of plasticity in an indented nanocrystalcitations
- 20173D imaging of a dislocation loop at the onset of plasticity in an indented nanocrystalcitations
- 2015Signature of dislocations and stacking faults of face-centred cubic nanocrystals in coherent X-ray diffraction patterns: a numerical studycitations
Places of action
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article
Mapping inversion domain boundaries along single GaN wires with Bragg coherent X-ray imaging
Abstract
Gallium nitride (GaN) is of technological importance for a wide variety of optoelectronic applications. Defects in GaN, like inversion domain boundaries (IDBs), significantly affect the electrical and optical properties of the material. We report, here, on the structural configurations of planar inversion domain boundaries inside n-doped GaN wires measured by Bragg coherent X-ray diffraction imaging. Different complex domain configurations are revealed along the wires with a 9 nm in-plane spatial resolution. We demonstrate that the IDBs change their direction of propagation along the wires, promoting Ga-terminated domains and stabilizing into {11̅00}, that is, m-planes. The atomic phase shift between the Ga- and N-terminated domains was extracted using phase-retrieval algorithms, revealing an evolution of the out-of-plane displacement (∼5 pm, at maximum) between inversion domains along the wires. This work provides an accurate inner view of planar defects inside small crystals.