TY - JOUR

T1 - Magnetic aerogels from FePt and CoPt3 directly from organic solution

AU - Schoske, L.

AU - Lübkemann-Warwas, F.

AU - Morales, I.

AU - Wesemann, C.

AU - Eckert, J. G.

AU - Graf, R. T.

AU - Bigall, N. C.

N1 - Funding Information: This work is supported by the Cluster of Excellence CUI: Advanced Imaging of Matter’ of the Deutsche Forschungsgemeinschaft (DFG)-EXC2056- project ID 390715994. The authors would like to thank the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG) for funding under Germany's excellence strategy within the cluster of excellence PhoenixD (EXC2122, project ID 390833453). The authors are also thankful for financial support from the German Research Foundation (Deutsche Forschungsgemeinschaft, DFG, Projects BI 1708/4-3 and INST 187/782-1) R.T.G. thank the Hannover School of Nanotechnology (HSN) for funding. J. G. E. thanks the School of Additive Manufacturing for support. The authors thank the Laboratory of Nano- and Quantum Engineering (LNQE) for providing the TEM facilities, Prof. Armin Feldhoff for providing SEM facilities and access to the XRD device, as well as Kirsten Eiben for providing access to the ICP-OES. We acknowledge financial support from th Open Access Publication Fund of Universität Hamburg.

PY - 2024/2/28

Y1 - 2024/2/28

N2 - Here the synthesis of magnetic aerogels from iron platinum and cobalt platinum nanoparticles is presented. The use of hydrazine monohydrate as destabilizing agent triggers the gelation directly from organic solution, and therefore a phase transfer to aqueous media prior to the gelation is not necessary. The aerogels were characterized through Transmission Electron Microscopy, Scanning Electron Microscopy, Powder X-Ray Diffraction Analysis and Argon Physisorption measurements to prove the formation of a porous network and define their compositions. Additionally, magnetization measurements in terms of hysteresis cycles at 5 K and 300 K (M-H-curves) as well as zero field cooled-field cooled measurements (ZFC-FC measurements) of the dried colloids and the respective xero- and aerogels were performed, in order to analyze the influence of the gelation process and the network structure on the magnetic properties.

AB - Here the synthesis of magnetic aerogels from iron platinum and cobalt platinum nanoparticles is presented. The use of hydrazine monohydrate as destabilizing agent triggers the gelation directly from organic solution, and therefore a phase transfer to aqueous media prior to the gelation is not necessary. The aerogels were characterized through Transmission Electron Microscopy, Scanning Electron Microscopy, Powder X-Ray Diffraction Analysis and Argon Physisorption measurements to prove the formation of a porous network and define their compositions. Additionally, magnetization measurements in terms of hysteresis cycles at 5 K and 300 K (M-H-curves) as well as zero field cooled-field cooled measurements (ZFC-FC measurements) of the dried colloids and the respective xero- and aerogels were performed, in order to analyze the influence of the gelation process and the network structure on the magnetic properties.

UR - http://www.scopus.com/inward/record.url?scp=85185165189&partnerID=8YFLogxK

U2 - 10.1039/d3nr05892a

DO - 10.1039/d3nr05892a

M3 - Article

AN - SCOPUS:85185165189

VL - 16

SP - 4229

EP - 4238

JO - NANOSCALE

JF - NANOSCALE

SN - 2040-3364

IS - 8

ER -