| 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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Eychmüller, Alexander
Universität Hamburg
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (31/31 displayed)
- 2024Organosilicon-Based Ligand Design for High-Performance Perovskite Nanocrystal Films for Color Conversion and X-ray Imagingcitations
- 2023Voltage-Controlled ON-OFF-Switching of Magnetoresistance in FeOx/Fe/Au Aerogel Networks
- 2023Recipes and designs for aerogelscitations
- 2023Structural investigations of Au–Ni aerogels: morphology and element distributioncitations
- 2022Self-Supported Three-Dimensional Quantum Dot Aerogels as a Promising Photocatalyst for CO2 Reduction
- 2021Unprecedented Catalytic Activity and Selectivity in Methanol Steam Reforming by Reactive Transformation of Intermetallic In–Pt Compoundscitations
- 2020Increasing the Diversity and Understanding of Semiconductor Nanoplatelets by Colloidal Atomic Layer Deposition
- 2020Heterostructured Bismuth Telluride Selenide Nanosheets for Enhanced Thermoelectric Performance
- 2018Structural Analysis and Electrochemical Properties of Bimetallic Palladium–Platinum Aerogels Prepared by a Two‐Step Gelation Processcitations
- 2018Nanostructuring noble metals as unsupported electrocatalysts for polymer electrolyte fuel cellscitations
- 2018Self – supporting Hierarchical Porous PtAg Alloy Nanotubular Aerogels as Highly Active and Durable Electrocatalystscitations
- 2018Effect of Acid Washing on the Oxygen Reduction Reaction Activity of Pt-Cu Aerogel Catalystscitations
- 2018Core–Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reactioncitations
- 2018Unsupported Pt-Ni Aerogels with Enhanced High Current Performance and Durability in Fuel Cell Cathodescitations
- 2017Core–Shell Structuring of Pure Metallic Aerogels towards Highly Efficient Platinum Utilization for the Oxygen Reduction Reactioncitations
- 2017Homogeneity and Elemental Distribution in Self-Assembled Bimetallic Pd-Pt Aerogels prepared by a spontaneous one-step gelation processcitations
- 20173D Assembly of All-Inorganic Colloidal Nanocrystals into Gels and Aerogelscitations
- 2016Anodically fabricated TiO2–SnO2 nanotubes and their application in lithium ion batteriescitations
- 20165-(2-Mercaptoethyl)-1H-tetrazolecitations
- 2016Gold aerogels: Three-dimensional assembly of nanoparticles and their use as electrocatalytic interfacescitations
- 2016pH and concentration dependence of the optical properties of thiol-capped CdTe nanocrystals in water and D2O
- 2016Homogeneity and elemental distribution in self-assembled bimetallic Pd–Pt aerogels prepared by a spontaneous one-step gelation processcitations
- 2015A spray-coating process for highly conductive silver nanowire networks as the transparent top-electrode for small molecule organic photovoltaicscitations
- 20153D assembly of silica encapsulated semiconductor nanocrystalscitations
- 2015Noble Metal Aerogels - Synthesis, Characterization, and Application as Electrocatalysts
- 2014Hybrid plasmonic/semiconductor nanoparticle monolayer assemblies as hyperbolic metamaterials
- 2014Multimetallic aerogels by template-free self-assembly of Au, Ag, Pt, and Pd nanoparticlescitations
- 2013Mixed aerogels from Au and CdTe nanoparticlescitations
- 2011Enhanced nucleation of vortices in soft magnetic materials prepared by silica nanosphere lithographycitations
- 2010Fabrication of two-dimensional Au@FePt core-shell nanoparticle arrays by photochemical metal depositioncitations
- 2009Hydrogels and aerogels from noble metal nanoparticlescitations
Places of action
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article
Enhanced nucleation of vortices in soft magnetic materials prepared by silica nanosphere lithography
Abstract
<p>Magnetic vortices show promise as data storage structures, however the vortex formation process imposes a lower limit on the elements size. In this article a technique is presented, which application increases the probability of nucleating of magnetic vortices in sub-micrometer sized soft magnetic thin film elements. By tailoring the edge geometry of the elements, the symmetry of their magnetic configuration is broken in a manner which favors vortex nucleation. Micromagnetic simulations are presented, which demonstrate this effect in soft-magnetic disks with beveled edges. The favored edge geometry is realized by applying nanosphere lithography directly on top of a ferromagnetic thin film material. In this process, the film is masked with a self assembled monolayer of SiO<sub>2</sub>-nanospheres and subsequently ion-etched. The resulting magnetic reversal loops show that in both magnetically isolated as well as in closely packed arrays of beveled disks, vortex formation takes place. The technique presented facilitates the vortex formation even in closely packed and small elements. The lowering of the minimum critical diameter for vortex formation enables a significant increase of data storage density in devices based on magnetic vortices.</p>