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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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Lee, H.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (16/16 displayed)
- 2024Evidence of non-isentropic release from high residual temperatures in shocked metals measured with ultrafast x-ray diffractioncitations
- 2023Compressive effects in melting of palladium thin films studied by ultrafast x-ray diffraction
- 2023Structure-sensitive epoxidation of dicyclopentadiene over TiO 2 catalystscitations
- 2022Multiscale modelling framework for elasticity of ultra high strength concrete using nano/microscale characterization and finite element representative volume element analysiscitations
- 2022Magnetoresponsive Optical Fiber with Fuse-Effect-Induced Fluorinated Graphene Oxide Corecitations
- 2021Label-free detection of single nanoparticles with disordered nanoisland surface plasmon sensor.citations
- 2021Observation of Fundamental Mechanisms in Compression-Induced Phase Transformations Using Ultrafast X-ray Diffractioncitations
- 2021In-plane quasi-single-domain BaTiO<sub>3</sub> via interfacial symmetry engineeringcitations
- 2018In situ X-ray diffraction measurement of shock-wave-driven twinning and lattice dynamicscitations
- 2016Studies on the active site of deacetoxycephalosporin C synthase.citations
- 2015Positive reactions to nickel on a patch test do not predict clinical outcome of nickel alloy-based atrial septal defect occluder implantationcitations
- 2014Spectral theory of a Neumann-Poincaré-type operator and analysis of cloaking by anomalous localized resonance IIcitations
- 2014Spectral theory of a Neumann-Poincaré-type operator and analysis of cloaking by anomalous localized resonance II
- 2011The effect of vacancies on the annular dark field image contrast of grain boundaries: A SrTiO(3) case studycitations
- 2008Thermal expansivity of tetrahydrofuran clathrate hydrate with diatomic guest moleculescitations
- 2006Dynamics in polymer-silicate nanocomposites as studied by dielectric relaxation spectroscopy and dynamic mechanical spectroscopycitations
Places of action
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article
The effect of vacancies on the annular dark field image contrast of grain boundaries: A SrTiO(3) case study
Abstract
The analysis of grain boundary structure in high resolution electron microscopy is often hindered by contrast variation within the grain boundary region which is not explained by simple models of the grain boundary structure. Recent work suggests that structural disorder along the beam direction and the presence of vacancies contribute significantly to this effect. One might expect a significant reduction in contrast in a Z-contrast image of a grain boundary would imply that vacancies present must result from the absence of heavier elements. Using a [001](210) S5 grain boundary in SrTiO3 as a test case and first principles structure relaxation to calculate stable defect structures, we show that the reduction in the intensity from fully occupied Sr columns due to the structural distortion resulting from a nearby O vacancy can be as great as that due to introducing a Sr vacancy in the column itself. The effect on energy dispersive X-ray spectroscopy signals is also considered, but found to be smaller than that on Z-contrast images.