Controlling the oxidation of magnetic and electrically conductive solid-solution iron-rhodium nanoparticles synthesized by laser ablation in liquids
| Autor: | Nadarajah, Ruksan, Tahir, Shabbir, Landers, Joachim, Koch, David, Semisalova, Anna, Wiemeler, Jonas, El-Zoka, Ayman, Kim, Se-Ho, Utzat, Detlef, Möller, Rolf, Gault, Baptiste, Wende, Heiko, Farle, Michael, Gökce, Bilal |
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| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
nanostrand
Condensed Matter - Materials Science oxidation FMR Chemie Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Physik (inkl. Astronomie) laser ablation in liquid FeRh Article lcsh:Chemistry Forschungszentren » Center for Nanointegration Duisburg-Essen (CENIDE) lcsh:QD1-999 atom probe tomography ddc:540 Mössbauer Fakultät für Chemie » Technische Chemie ddc:530 nanoparticles |
| Zdroj: | Nanomaterials Volume 10 Issue 12 Nanomaterials, Vol 10, Iss 2362, p 2362 (2020) |
| Popis: | This study focuses on the synthesis of FeRh nanoparticles via pulsed laser ablation in liquid and on controlling the oxidation of the synthesized nanoparticles. Formation of monomodal &gamma FeRh nanoparticles was confirmed by transmission electron microscopy (TEM) and their composition confirmed by atom probe tomography (APT). For these particles, three major contributors to oxidation were analysed: (1) dissolved oxygen in the organic solvents, (2) the bound oxygen in the solvent and (3) oxygen in the atmosphere above the solvent. The decrease of oxidation for optimized ablation conditions was confirmed through energy-dispersive X-ray (EDX) and Mö ssbauer spectroscopy. Furthermore, the time dependence of oxidation was monitored for dried FeRh nanoparticles powders using ferromagnetic resonance spectroscopy (FMR). By magnetophoretic separation, B2-FeRh nanoparticles could be extracted from the solution and characteristic differences of nanostrand formation between &gamma FeRh and B2-FeRh nanoparticles were observed. |
| Databáze: | OpenAIRE |
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