Issue 23, 2021

Room temperature synthesized solid solution AuFe nanoparticles and their transformation into Au/Fe Janus nanocrystals

Abstract

Solid solution AuFe nanoparticles were synthesized for the first time under ambient conditions by an adapted method previously established for the Fe3O4–Au core–shell morphology. These AuFe particles preserved the fcc structure of Au incorporated with paramagnetic Fe atoms. The metastable AuFe can be segregated by transformation into Janus Au/Fe particles with bcc Fe and fcc Au upon annealing. The ferromagnetic Fe was epitaxially grown on low index fcc Au planes. This preparation route delivers new perspective materials for magnetoplasmonics and biomedical applications and suggests the reconsideration of existing protocols for magnetite–gold core–shell synthesis.

Graphical abstract: Room temperature synthesized solid solution AuFe nanoparticles and their transformation into Au/Fe Janus nanocrystals

Supplementary files

Article information

Article type
Paper
Submitted
19 Janv. 2021
Accepted
06 Maijs 2021
First published
06 Maijs 2021
This article is Open Access
Creative Commons BY-NC license

Nanoscale, 2021,13, 10402-10413

Room temperature synthesized solid solution AuFe nanoparticles and their transformation into Au/Fe Janus nanocrystals

M. V. Efremova, M. Spasova, M. Heidelmann, I. S. Grebennikov, Z. Li, A. S. Garanina, I. O. Tcareva, A. G. Savchenko, M. Farle, N. L. Klyachko, A. G. Majouga and U. Wiedwald, Nanoscale, 2021, 13, 10402 DOI: 10.1039/D1NR00383F

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