| 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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Mocuta, Cristian
Processes and Engineering in Mechanics and Materials
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Investigation of the mechanical work during ultrasonic fatigue loading using pulsed time-resolved X-ray diffractioncitations
- 2024Investigation of Phase Segregation Dynamics in Ge‐Rich GST Thin Films by In Situ X‐Ray Fluorescence Mappingcitations
- 2024Investigation of Phase Segregation Dynamics in Ge‐Rich GST Thin Films by In Situ X‐Ray Fluorescence Mappingcitations
- 2023Understanding crystallization in undoped and nitrogen doped GeTe thin films using substrate curvature measurementscitations
- 2023Crystallization kinetics from Ge-rich Ge–Sb–Te thin films: Influence of thicknesscitations
- 2023Multistep Crystallization of Ge‐Rich GST Unveiled by In Situ synchrotron X‐ray diffraction and (scanning) transmission electron microscopycitations
- 2023On the microstructure and texture of intermetallics in Al/Mg/Al multi-layer composite fabricated by Accumulative Roll Bondingcitations
- 2023New experimental approach for the metallurgical study of medieval ferrous artefact: the case of arms and armour manufacturing
- 2023Nanocomposites of chalcogenide phase-change materials: from C-doping of thin films to advanced multilayerscitations
- 2023First examinations of ancient ferrous alloys in Renaissance armour by SR-X-Ray diffractioncitations
- 2022A detailed investigation of the core@shell structure of exchanged coupled magnetic nanoparticles after performing solvent annealingcitations
- 2022Properties of self-oxidized single crystalline perovskite N : BaTiO$_3$ oxynitride epitaxial thin filmscitations
- 2022Crystallization of Ge-Rich GeSbTe Alloys ; Crystallization of Ge-Rich GeSbTe Alloys: The Riddle Is Solvedcitations
- 2022Properties of self-oxidized single crystalline perovskite N : BaTiO 3 oxynitride epitaxial thin filmscitations
- 2022An In Situ Synchrotron X‐Ray Diffraction Study on the Influence of Hydrogen on the Crystallization of Ge‐Rich Ge2Sb2Te5citations
- 2020Mn 0.7 Fe 2.3 O 4 Nanoplatelets Embedded in BaTiO 3 Perovskite Thin Films for Multifunctional Composite Barrierscitations
- 2020Ultrafast transient liquid assisted growth of high current density superconducting filmscitations
- 2020Ultrafast transient liquid assisted growth of high current density superconducting films
- 2020Relevance of the Formation of Intermediate Non-Equilibrium Phases in YBa2Cu3O7-x Film Growth by Transient Liquid-Assisted Growthcitations
- 2020Relevance of the Formation of Intermediate Non-Equilibrium Phases in YBa2Cu3O7-x Film Growth by Transient Liquid-Assisted Growth
- 2020Artificial laminar oxide multiferroic magnetoelectric thin film structures ; Artificial laminar oxide multiferroic magnetoelectric thin film structures: Elaboration methods and study by synchrotron radiation techniquescitations
- 2020New insights into thermomechanical behavior of GeTe thin films during crystallizationcitations
- 2020Piezoelectric Properties of Pb1−xLax(Zr0.52Ti0.48)1−x/4O3 Thin Films Studied by In Situ X-ray Diffractioncitations
- 2019Revealing the role of microstructure architecture on strength and ductility of Ni microwires by in-situ synchrotron X-ray diffractioncitations
- 2018Fast X-ray reflectivity measurements using an X-ray pixel area detector at the DiffAbs beamline, Synchrotron SOLEILcitations
- 2017Axiotaxy in oxide heterostructures: Preferential orientation of BaCeO3 nanoparticles embedded in superconducting YBa2Cu3O7 −δ thin filmscitations
- 2017Finite size effect on the structural and magnetic properties of MnAs/GaAs(001) patterned microstructures thin filmscitations
- 2014Multiaxial deformation and strain-induced crystallization around a fatigue crack in natural rubbercitations
Places of action
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article
A detailed investigation of the core@shell structure of exchanged coupled magnetic nanoparticles after performing solvent annealing
Abstract
Thanks to important advances in synthesis techniques, a wide collection of bimagnetic core-shell nanoparticles with tunable properties was reported in the literature. Such nanoparticles may combine two phases with different intrinsic magnetic properties (magnetization, anisotropy, coercive field, etc.). Core-shell structures with large interfaces usually favor efficient exchange coupling between both phases that may result in the enhancement of the effective magnetic anisotropy energy and of the coercive field. In this context, the chemical composition and the crystal structure of the core/shell interface in nanoparticles are crucial parameters to modulate efficiently their magnetic properties. Here, we report on the solvent mediated thermal annealing of Fe 3Àd O 4 @CoO nanoparticles in a high boiling point solvent. The structure of nanoparticles was investigated before and after thermal annealing by advanced characterization techniques such as high resolution transmission electron microscopy (HR-TEM), X-ray absorption spectroscopy (XAS), X-ray magnetic circular dichroism (XMCD) and diffraction anomalous near edge structure (DANES). The combination of DANES and XAS/XMCD allowed studying the cationic distribution in spinel and wu ¨stite crystal structures as a function of site occupancy and oxidation state. To the best of our knowledge, it is the first time that DANES is performed to quantitatively investigate the chemical composition of biphasic metal oxide nanoparticles. Hence, we have investigated precisely the chemical composition of the spinel phase and that of the wu ¨stite phase. Besides the partial solubilisation of the CoO shell observed by HR-TEM, thermal annealing favors the formation of a thicker intermediate Co-doped ferrite layer at the spinel/wu ¨stite interface. Such significant modifications of the core@shell structure markedly influence interfacial coupling phenomena between the core and the shell, hence offering wide perspectives towards nanoparticles with tunable magnetic properties for a variety of applications.