Controlling the Oxidation of Magnetic and Electrically Conductive Solid-Solution Iron-Rhodium Nanoparticles Synthesized by Laser Ablation in Liquids

Nadarajah, Ruksan; Tahir, Shabbir; Landers, Joachim; Koch, David; Semisalova, Anna, S.; Wiemeler, Jonas; El-Zoka, Ayman; Kim, Se-Ho; Utzat, Detlef; Möller, Rolf; Gault, Baptiste; Wende, Heiko; Farle, Michael; Gökce, Bilal

doi:10.3390/nano10122362

Artikel / Aufsatz Fr., 27. Nov.. 2020 CC BY 4.0

Veröffentlicht

Controlling the Oxidation of Magnetic and Electrically Conductive Solid-Solution Iron-Rhodium Nanoparticles Synthesized by Laser Ablation in Liquids

Nadarajah, Ruksan ; Tahir, Shabbir ; Landers, Joachim ; Koch, David; Semisalova, Anna S.; Wiemeler, Jonas ; El-Zoka, Ayman ; Kim, Se-Ho; Utzat, Detlef ; Möller, Rolf ; Gault, Baptiste ; Wende, Heiko ; Farle, Michael ; Gökce, Bilal

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 γ-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 Mössbauer 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 γ-FeRh and B2-FeRh nanoparticles were observed.

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Datum der Veröffentlichung:: 27.11.2020
URN:: urn:nbn:de:hbz:464-20210211-123007-1
DOI:: 10.3390/nano10122362
Sprache:: Englisch
Ressourcentyp:: Text
Schlagwörter:: FeRh; nanoparticles; oxidation; laser ablation in liquid; FMR; Mössbauer; atom probe tomography; nanostrand
Kollektion:: E-Publikationen
Sachgruppen der Deutschen Nationalbibliographie:: 540 Chemie
Sachgruppen der Deutschen Nationalbibliographie:: 530 Physik
Einrichtung:: Fakultät für Chemie, Technische Chemie
Einrichtung:: Forschungszentren, Center for Nanointegration Duisburg-Essen (CENIDE)
Förderung:: The publication of this article was supported by the Publication Fund of the University of Duisburg-Essen.
Informationen zur Erstveröffentlichung:: Nadarajah, R.; Tahir, S.; Landers, J.; Koch, D.; Semisalova, A.S.; Wiemeler, J.; El-Zoka, A.; Kim, S.-H.; Utzat, D.; Möller, R.; Gault, B.; Wende, H.; Farle, M.; Gökce, B. Controlling the Oxidation of Magnetic and Electrically Conductive Solid-Solution Iron-Rhodium Nanoparticles Synthesized by Laser Ablation in Liquids. Nanomaterials 2020, 10, 2362. https://doi.org/10.3390/nano10122362