| 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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Köhler, Daniel
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (14/14 displayed)
- 2024In-situ CT of the clinching process – Influence of settling effects due to process interruptions
- 2023Comparison of ex- and in-situ investigations of clinched single-lap shear specimenscitations
- 2023In-situ computed tomography and transient dynamic analysis of a single-lap shear test with a composite-metal clinch pointcitations
- 2023In-situ computed tomography - Analysis of a single-lap shear test with composite-metal pin joints
- 2022Approach to determine the characteristic dimensions of clinched joints by industrial X-ray computed tomography
- 2022Clinching in In Situ CT—A Novel Validation Method for Mechanical Joining Processescitations
- 2022Review on mechanical joining by plastic deformationcitations
- 2022Development of a rivet geometry for solid self-piercing riveting of thermally loaded CFRP-metal joints in automotive constructioncitations
- 2022Clinching of aluminum materials – Methods for the continuous characterization of process, microstructure and propertiescitations
- 2022Investigations on combined in situ CT and acoustic analysis during clinchingcitations
- 2022Untersuchung zum Einfluss radioopaker Zwischenschichten bei der in-situ CT geclinchter Verbindungen
- 2021In situ computed tomography – Analysis of a single-lap shear test with clinch pointscitations
- 2012Semimetallic paramagnetic nano-Bi2Ir and superconducting ferromagnetic nano-Bi3Ni by microwave-assisted synthesis and room temperature pseudomorphosiscitations
- 2012Synthesis of BiRh nanoplates with superior catalytic performance in the semihydrogenation of acetylenecitations
Places of action
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article
Semimetallic paramagnetic nano-Bi2Ir and superconducting ferromagnetic nano-Bi3Ni by microwave-assisted synthesis and room temperature pseudomorphosis
Abstract
<p>Uniform nanocrystals of the intermetallic compounds Bi<sub>2</sub>Ir (diameter ' 50 nm) and Bi<sub>3</sub>Ni (typical size 200×600 nm) were obtained by a microwave-assisted polyol process at 240 °C. The method was also applied to the spatially confined reaction environment in the microporous exo-template SBA-15 resulting in Bi<sub>3</sub>Ni particles of about 6 nm. Non-crystalline bundles of parallel Bi<sub>3</sub>Ni nanofibres that have an individual diameter of less than 1 nm were obtained by reductive pseudomorphosis of the subiodide Bi12Ni4I3 at room temperature. Magnetic susceptibility measurements demonstrate coexistence of ferromagnetism and superconductivity in a single phase for the nanostructured Bi<sub>3</sub>Ni materials. Curie temperature, coercive field, remnant magnetization, saturation moment, diamagnetic screening, and critical field vary with particle size. The crystal structure of Bi<sub>2</sub>Ir was determined by Rietveld refinement of powder X-ray diffraction data. Bi<sub>2</sub>Ir crystallizes in the monoclinic arsenopyrite type (space group P21/c), a superstructure of the markasite type, with a = 690.11(1), b = 678.85(1), c = 696.17(1) pm, and β = 116.454(1)°. In contrast to most of the other phases of this type, the Bi<sub>2</sub>Ir is not a diamagnetic semiconductor but a weakly paramagnetic semimetal. Conductivity measurements down to 4 K and magnetization measurements in a field of μ0H = 10mT down to 1.8 K give no evidence for a transition into the superconducting state. Bonding analysis shows prevailing contribution of Bi-Bi interactions to the conduction, whereas Bi-Ir bonding is mostly covalent and localized.</p>