| 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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Wróbel, Jan S.
Warsaw University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2023A quinary WTaCrVHf nanocrystalline refractory high-entropy alloy withholding extreme irradiation environmentscitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloy:Tensile tests under high energy synchrotron diffractioncitations
- 2022Mechanical characterisation of V-4Cr-4Ti alloycitations
- 2021Composition Stability and Cr-Rich Phase Formation in W-Cr-Y and W-Cr-Ti Smart Alloyscitations
- 2021Advanced self-passivating alloys for an application under extreme conditionscitations
- 2021Elastic dipole tensors and relaxation volumes of point defects in concentrated random magnetic Fe-Cr alloyscitations
- 2020Chemical short-range order in derivative Cr–Ta–Ti–V–W high entropy alloys from the first-principles thermodynamic studycitations
- 2020Elastic dipole tensors and relaxation volumes of point defects in concentrated random magnetic Fe-Cr alloys
- 2008Atomic ordering in nano-layered L1<inf>0</inf> Ab binaries: Multiscale Monte-Carlo simulations
Places of action
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article
Atomic ordering in nano-layered L1<inf>0</inf> Ab binaries: Multiscale Monte-Carlo simulations
Abstract
<p>Combined nano- and mesoscale simulation of chemical ordering kinetics in nano-layered L1<sub>0</sub> AB binary intermetallics was performed. In the nano- (atomistic) scale Monte Carlo (MC) technique implemented with vacancy mechanism of atomic migration and diverse models for the system energetics were used. The meso-scale microstructure evolution was, in turn, modelled by means of a Monte Carlo procedure simulating antiphase-domain-boundary (APB) motion as controlled by antiphase-boundary energies evaluated within the nano-scale simulations. The study addressed FePt thin layers considered as a material for ultra-high-density magnetic storage media and revealed metastability of the L1<sub>0</sub> c-variant superstructure with monoatomic planes parallel to the (001) layer surface and off-plane easy magnetization. The layers, originally perfectly ordered in a c-variant of the L1<sub>0</sub> superstructure, showed homogeneous disordering running in parallel with a spontaneous re-orientation of the monoatomic planes leading to a mosaic microstructure composed of a- and b-L1<sub>0</sub>-variant domains. The domains nucleated heterogeneously on the free surface of the layer and grew discontinuously inward its volume. Finally, the domains relaxed towards an equilibrium microstructure of the system. Two “atomistic-scale” processes: (i) homogeneous disordering and (ii) nucleation of the a- and b-L1<sub>0</sub>-variant domains showed characteristic time scales. The same was observed for the meso-scale processes: (i) heterogeneous L1<sub>0</sub>-variant domain growth and (ii) domain microstructure relaxation. The above complex structural evolution anticipated by the multiscale MC simulations has recently been observed experimentally in epitaxially deposited thin films of FePt.</p>