A5006972511- Characterization and Applications of Magnetic Nanoparticles
- Nanoparticle-Based Drug Delivery
- Magnetic properties of thin films
- Thermal properties of materials
- Magnetic Properties and Synthesis of Ferrites
- Electrohydrodynamics and Fluid Dynamics
- Advanced Thermoelectric Materials and Devices
- Thermal Expansion and Ionic Conductivity
- Iron oxide chemistry and applications
Technical University of Darmstadt
2022-2025
Iron nitrides α″-Fe16N2 and α′-Fe8N have attracted significant interest due to their potential as a rare-earth-free semi-hard magnetic materials. In this work, systematic investigation of nitrogen ion implantation fluences on iron thin films was performed increase tetragonality beyond what is currently possible, thereby enhancing the performance. A structural characterization samples with different concentration highlighted that can be formed within fluence range from 4 7 × 1016 N+ ions...
This work examines the effect of changing ratio different surfactants in single-core iron-based nanoparticles with respect to their specific absorption rate context magnetic hyperthermia and cellular uptake by human umbilical vein endothelial cells (HUVEC). Three types were synthesized separately adding oleic acid or oleylamine a mixture both (oleic acid/oleylamine) as surfactants. A carefully controlled thermal decomposition synthesis process led monodispersed narrow size distribution....
Abstract In this work, we investigate alternative materials systems that, based on their intrinsic magnetic properties, have the potential to deliver enhanced heating power in fluid hyperthermia. The focus lies with high magnetization phases, namely iron-nitrogen (Fe-N), iron-boron (Fe-B) and iron-carbon (Fe-C) compounds, performance comparison conventionally used iron oxides, γ -Fe 2 O 3 , Fe 4 non-stoichiometric mixtures thereof. as a function of applied alternating field frequency is...
Abstract The production of bulk nanostructured silicide thermoelectric materials by a reversible hydrogen absorption–desorption process is demonstrated. Here, high‐pressure reactive milling under 100 bar used to decompose the Ca 2 Si phase into CaH and Si. Subsequent vacuum heat treatment results in desorption recombination constituents original phase. By changing temperature, or 5 3 can be achieved. Most importantly, advanced synthesis enables drastic simple microstructure refinement more...
In this work, a well-defined system of spherical monodispersed superparamagnetic core-shell Fe@Fe <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">3</inf> O xmlns:xlink="http://www.w3.org/1999/xlink">4</inf> nanoparticles has been synthesized by thermal decomposition reaction. Before surface functionalization, the mean particle size was 14.1 nm ± 1.2 with bright shell thickness 1.3 0.4 nm. After ligand exchange more than doubled to 2.7 The...
In this work, we investigate alternative materials systems that based on their intrinsic magnetic properties have the potential to deliver enhanced heating power in fluid hyperthermia. The focus lies with high magnetization phases, namely iron-nitrogen (Fe-N), ironboron (Fe-B) and iron-carbon (Fe-C) compounds performance comparison conventionally used iron oxides, γ-Fe2O3, Fe3O4 non-stoichiometric mixtures thereof. We calculate as a function of applied AMF frequency, identify peak particle...