| 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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Rabkin, Eugen
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Sinter-Based Additive Manufacturing of Ni-Ti Shape Memory Alloy
- 2023Tailoring LPSO phases in Mg–Y–Zn alloys to govern hydrogenation kineticscitations
- 2023Solid-solution and precipitation softening effects in defect-free faceted nickel-iron nanoparticlescitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage:Modelling, synthesis and propertiescitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage : modelling, synthesis and propertiescitations
- 2022Hybrid hierarchical nanolattices with porous platinum coatingcitations
- 2022In Situ Nano-Indentation of a Gold Sub-Micrometric Particle Imaged by Multi-Wavelength Bragg Coherent X-ray Diffractioncitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and properties ; ENEngelskEnglishMagnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and propertiescitations
- 2022Hydrogen storage properties of as-synthesized and severely deformed magnesium – multiwall carbon nanotubes compositecitations
- 2022Magnesium- and intermetallic alloys-based hydrides for energy storage: modelling, synthesis and propertiescitations
- 2021Twin boundary migration in an individual platinum nanocrystal during catalytic CO oxidationcitations
- 2021Grain Boundary Wetting Phenomena in High Entropy Alloys Containing Nitrides, Carbides, Borides, Silicides, and Hydrogen: A Reviewcitations
- 2021The impact of alloying on defect-free nanoparticles exhibiting softer but tougher behaviorcitations
- 2021The Grain Boundary Wetting Phenomena in the Ti-Containing High-Entropy Alloys: A Reviewcitations
- 2021Grain Boundary Wetting by a Second Solid Phase in the High Entropy Alloys: A Reviewcitations
- 2021Thermal stability of thin Au films deposited on salt whiskerscitations
- 2021When more is less: plastic weakening of single crystalline Ag nanoparticles by the polycrystalline Au shellcitations
- 2021A convolutional neural network for defect classification in Bragg coherent X-ray diffractioncitations
- 2020Grain growth stagnation in thin films due to shear-coupled grain boundary migrationcitations
- 2019Grain growth and solid-state dewetting of Bi-Crystal Ni-Fe thin films on sapphirecitations
- 2019Effect of SPD Processing on the Strength and Conductivity of AA6061 Alloycitations
- 2017Annealing-induced recovery of indents in thin Au(Fe) bilayer films
- 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
- 2016Cross-Split of Dislocations: An Athermal and Rapid Plasticity Mechanismcitations
- 2014Nanostructured titanium-based materials for medical implants: Modeling and developmentcitations
- 2011Nanoindentation size effect in single-crystal nanoparticles and thin filmscitations
- 2007Onset of Plasticity in Gold Nanopillar Compressioncitations
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article
Grain growth and solid-state dewetting of Bi-Crystal Ni-Fe thin films on sapphire
Abstract
We studied the solid-state dewetting behavior of thin Ni<sub>80</sub>Fe<sub>20</sub>films deposited on basal plane oriented sapphire substrate and annealed in the range of temperatures of 1023–1323 K. All studied films exhibited strong <111> texture and maze bicrystal microstructure, with only two grains misoriented by 60° around the common <111> axis present in the film. The morphology of partially dewetted films changed from the one typical for polycrystalline thin films to the one typical for single crystalline heteroepitaxial films with increasing temperatures and annealing times. This change of dewetting behavior was associated with the fast grain growth in the films. The films of pure Ni of identical thickness, annealed under identical conditions exhibited significantly slower grain growth and lower thermal stability. Both the high-resolution X-ray diffraction and the cross-sectional high-resolution transmission electron microscopy observations revealed the phase separation of the Ni<sub>80</sub>Fe<sub>20</sub>films into two parallel layers of the face-centered cubic (adjacent to the substrate) and hexagonal close-packed (on the top of the film) phases of similar compositions. Our density functional theory (DFT) calculations indicated that this phase separation is driven by the decrease of the film surface and interface energy, leading to the thermodynamically equilibrium thickness of the metastable hexagonal close-packed phase. This phase exhibits higher surface anisotropy than its stable face-centered cubic counterpart and is instrumental in accelerating the grain growth in the film via suppression of grain boundary grooving.