Magnetic aerogels from FePt and CoPt₃ directly from organic solution

verfasst von

L. Schoske, F. Lübkemann-Warwas, I. Morales, C. Wesemann, J. G. Eckert, R. T. Graf, N. C. Bigall

Abstract

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.

Organisationseinheit(en)

Institut für Physikalische Chemie und Elektrochemie
PhoenixD: Simulation, Fabrikation und Anwendung optischer Systeme
School for Additive Manufacturing
Laboratorium für Nano- und Quantenengineering

Externe Organisation(en)

Universität Hamburg

Typ

Artikel

Journal

NANOSCALE

Band

16

Seiten

4229-4238

Anzahl der Seiten

10

ISSN

2040-3364

Publikationsdatum

28.02.2024

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Werkstoffwissenschaften (insg.)

Elektronische Version(en)

https://doi.org/10.1039/d3nr05892a (Zugang: Offen)