| 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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Hahn, H.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (26/26 displayed)
- 2024In situ TEM studies of relaxation dynamics and crystal nucleation in thin film nanoglasses
- 2020Elastic Moduli of Nanoglasses and Melt-Spun Metallic Glasses by Ultrasonic Time-of-Flight Measurements
- 2019High-pressure torsion driven mechanical alloying of CoCrFeMnNi high entropy alloycitations
- 2019Thermal Stability of Athermal ω-Ti(Fe) Produced upon Quenching of β-Ti(Fe)citations
- 2018High-pressure torsion driven mechanical alloying of CoCrFeMnNi high entropy alloycitations
- 2018Transformation pathway upon heating of Ti-Fe alloys deformed by high-pressure torsioncitations
- 2018Amorphous nickel nanophases inducing ferromagnetism in equiatomic Ni-Ti alloycitations
- 2018The α→ω and β→ω phase transformations in Ti–Fe alloys under high-pressure torsioncitations
- 2017Transformations of α' martensite in Ti–Fe alloys under high pressure torsioncitations
- 2016High-pressure torsion driven phase transformations in Cu-Al-Ni shape memory alloyscitations
- 2015Solid electrolyte thin films grown by novel CO₂ laser assisted chemical vapor deposition
- 2015A simple and straightforward mechanochemical synthesis of the far-from-equilibrium zinc aluminate, ZnAl₂O₄, and its response to thermal treatmentcitations
- 2015Nanotwinned silver nanowires: Structure and mechanical propertiescitations
- 2015Ion-irradiation-assisted tuning of phase transformations and physical properties in single crystalline Fe7Pd3ferromagnetic shape memory alloy thin films
- 2015Functional thin films for Li-ion batteries grown by novel CO₂-laser assisted chemical vapor deposition
- 2013A facile synthesis of a carbon-encapsulated Fe₃O₄ nanocomposite and its performance as anode in lithium-ion batteriescitations
- 2013Influence of particle size and fluorination ratio of CFₓ precursor compounds on the electrochemical performance of C-FeF₂ nanocomposites for reversible lithium storagecitations
- 2012Atomic Structure and Structural Stability of $Sc_{75}Fe_{25}$ Nanoglasses.citations
- 2011The interaction mechanism of screw dislocations with coherent twin boundaries in different face-centred cubic metalscitations
- 2011Modified synthesis of [Fe/LiF/C] nanocomposites, and its application as conversion cathode material in lithium batteriescitations
- 2009Systematic study of strain rate sensitivity of nanostructured Pd alloys using nanoindentation
- 2009Spark plasma sintering of self-propagating high-temperature synthesized TiC0.7/TiB2 powders and detailed characterization of dense productcitations
- 2009Thermal coupling of a high temperature PEM fuel cell with a complex hydride tankcitations
- 2007The innovation potential of bulk nanostructured materialscitations
- 2004Changes in the real structure and magnetoresistance of Co<inf>90</inf>Fe<inf>10</inf>/Cu and Co<inf>90</inf>Fe<inf>10</inf>/Cu<inf>85</inf>Ag<inf>10</inf>Au<inf>5</inf>multilayers after annealingcitations
- 2002Electronic and magnetic properties of monodispersed FePt nanoparticles
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article
A simple and straightforward mechanochemical synthesis of the far-from-equilibrium zinc aluminate, ZnAl₂O₄, and its response to thermal treatment
Abstract
Zinc aluminate (ZnAl2O4) nanoparticles with an average size of about 10 nm are synthesized via one-step mechanochemical processing of the ZnO : g-Al2O3 stoichiometric mixture at ambient temperature. The mechanochemically induced formation of the phase is followed by XRD and 27Al MAS NMR. Highresolution TEM studies reveal a non-uniform nanostructure of mechanosynthesized aluminate consisting of ordered grains surrounded or separated by disordered surface and interfacial regions. Due to the capability of 27Al MAS NMR to probe the local environment of the Al cations, valuable insights into the short-range structure of ZnAl2O4 on the °Angstr¨om length scale are provided. It is demonstrated that the as-prepared aluminate possesses a partly inverse spinel structure with a far-from equilibrium arrangement of cations and distorted polyhedra, which are spatially confined to the surface and interfacial regions with a volume fraction of ca. 50% and a thickness of ca. 1 nm. The response of the nanostructured ZnAl2O4 to subsequent thermal treatment is further investigated. It turned out that the thermally induced grain growth is accompanied by a release of microstrain, by a shrinkage of the lattice parameter, as well as by a variation in the oxygen parameter and metal–oxygen bond lengths. Evidence is given of the thermally induced redistribution of cations approaching their equilibrium positions. Upon heating above 1100 K, mechanosynthesized ZnAl2O4 relaxes towards a structural state that is similar to the bulk one.