| 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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Hübner, René
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (25/25 displayed)
- 2023Room-temperature extended short-wave infrared GeSn photodetectors realized by ion beam techniquescitations
- 2023Structural investigations of Au–Ni aerogels: morphology and element distributioncitations
- 2023Bottom-up fabrication of FeSb2 nanowires on crystalline GaAs substrates with ion-induced pre-patterning
- 2022Defect Nanostructure and its Impact on Magnetism of α-Cr2O3 thin filmscitations
- 2022Flexomagnetism and vertically graded Néel temperature of antiferromagnetic Cr2O3 thin films
- 2022Homogenization and short-range chemical ordering of Co–Pt alloys driven by the grain boundary migration mechanismcitations
- 2022Band-gap and strain engineering in GeSn alloys using post-growth pulsed laser melting
- 2022Self-Supported Three-Dimensional Quantum Dot Aerogels as a Promising Photocatalyst for CO2 Reduction
- 2021Controlled Silicidation of Silicon Nanowires Using Flash Lamp Annealingcitations
- 2020Increasing the Diversity and Understanding of Semiconductor Nanoplatelets by Colloidal Atomic Layer Deposition
- 2020Formation of Thin NiGe Films by Magnetron Sputtering and Flash Lamp Annealingcitations
- 2020Directionality of metal-induced crystallization and layer exchange in amorphous carbon/nickel thin film stackscitations
- 2020Tunable magnetic vortex dynamics in ion-implanted permalloy diskscitations
- 2019Specific ion effects directed noble metal aerogels: Versatile manipulation for electrocatalysis and beyondcitations
- 2019Structure-property relationship of Co 2 MnSi thin films in response to He + -irradiation
- 2018Percolated Si:SiO2 Nanocomposites: Oven- vs. Millisecond Laser-Induced Crystallization of SiOx Thin Filmscitations
- 2018Nematicity of correlated systems driven by anisotropic chemical phase separationcitations
- 2018Core–Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reactioncitations
- 2017Interplay between localization and magnetism in (Ga,Mn)As and (In,Mn)As
- 2017Purely antiferromagnetic magnetoelectric random access memory
- 2016Bonding structure and morphology of chromium oxide films grown by pulsed-DC reactive magnetron sputter depositioncitations
- 2016Carbon : nickel nanocomposite templates - predefined stable catalysts for diameter-controlled growth of single-walled carbon nanotubescitations
- 2013Forming-free resistive switching in multiferroic BiFeO3 thin films with enhanced nanoscale shuntscitations
- 2005Focussing and defocussing effects at radio frequency glow discharge optical emission spectroscopy analyses of thin films with partly nonconductive componentscitations
- 2002Crystallisation of caesium borosilicate glasses with approximate boroleucite compositioncitations
Places of action
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article
Bottom-up fabrication of FeSb2 nanowires on crystalline GaAs substrates with ion-induced pre-patterning
Abstract
<jats:p>In recent decades, nanostructuring has become one of the most important techniques to design and engineer functional materials. The properties of nanostructured materials are influenced by the interplay of its instrinsic bulk properties and the properties of its surface - the relative importance of the latter being enhanced by the increased surface-to-volume ratio in nanostructures. For instance, nanostructuring of a thermoelectric material can reduce the thermal conductivity while maintaining constant electrical conductivity and the Seebeck coefficient, which would improve the thermoelectric properties. For that reason, this study investigated the possibility of preparing nanowires of iron antimonide (FeSb<jats:sub>2</jats:sub>), a thermoelectric material, on single-crystalline gallium arsenide GaAs (001) substrates with ion-induced surface nanoscale pre-patterning and characterized the structure of the prepared FeSb<jats:sub>2</jats:sub> nanowires. The GaAs (001) substrates were pre-patterned using 1 keV Ar<jats:sup>+</jats:sup> ion irradiation. By using an ion source with a broad, unfocused ion beam at normal incidence, the patterned area can be scaled to nearly any size. The self-organized surface morphology is formed by reverse epitaxy and is characterized by almost perfectly parallel-aligned ripples at the nanometer scale. For the fabrication of FeSb<jats:sub>2</jats:sub> nanowires, iron and antimony were successively deposited on the pre-patterned GaAs substrates at grazing incidence and then annealed. They were characterized using transmission electron microscopy (TEM), in particular high-resolution TEM imaging for structure analysis and spectrum imaging analysis based on energy-dispersive X-ray spectroscopy for element characterization. With the presented fabrication method, FeSb<jats:sub>2</jats:sub> nanowires were produced successfully on GaAs(001) substrates with an ion-induced nanopatterned surface. The nanowires have a polycristalline structure and a cross-sectional area which is scalable up to 22 × 22 nm<jats:sup>2</jats:sup>. Due to the high order nanostructures on the GaAs substrate, the nanowires have a length of several micrometer. This bottom-up nanofabrication process based on ion-induced patterning can be a viable alternative to top-down procedures regarding to efficiency and costs.</jats:p>