One-pot synthesis of core-shell FeRh nanoparticles

Diana Ciuculescu, Catherine Amiens*, Marc Respaud, Andrea Falqui, Pierre Lecante, Robert E. Benfield, Linqin Jiang, Kai Fauth, Bruno Chaudret

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

The core shell Rh@Fe NPs was successfully synthesized by a one pot method, using the different kinetics of hydrogenation of organometallic precursors. Rh(allyl) 3 9 and Fe[N(SiMe 3 ) 2 ] 2 10 was selected as metal precursors. These particles displayed enhanced magnetic moments in quantitative agreement with measurements on bare-gas particles that demonstrated that the production of hexamethyldisilazane in the hydrogenation step is the most sensitive physical parameters of the material. Repeated energy-dispersive X-ray (EDX) analysis showed the presence of isolated NPs containing both materials. The structures were investigated by wide-angle X-ray scattering (WAXS) measurements. The magnetic properties of final Rh 20 Fe 80 NPs was carried out by SQUID and the zero field cooled magnetization curve measured at 1 mT is characteristic of a superparamagnetic behavior that displayed a very low blocking temperature.

Original languageEnglish (US)
Pages (from-to)4624-4626
Number of pages3
JournalChemistry of Materials
Volume19
Issue number19
DOIs
StatePublished - Sep 18 2007

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Chemistry

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