Magnetic aerogels from FePt and CoPt₃ directly from organic solution

authored by

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.

Organisation(s)

Institute of Physical Chemistry and Electrochemistry
PhoenixD: Photonics, Optics, and Engineering - Innovation Across Disciplines
School for Additive Manufacturing
Laboratory of Nano and Quantum Engineering

External Organisation(s)

Universität Hamburg

Type

Article

Journal

NANOSCALE

Volume

16

Pages

4229-4238

No. of pages

10

ISSN

2040-3364

Publication date

28.02.2024

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Materials Science(all)

Electronic version(s)

https://doi.org/10.1039/d3nr05892a (Access: Open)