Synthesis and characterization of magnetic FePt/Au Core/Shell nanoparticles

Kazuaki Yano, Vikas Nandwana, Girija S. Chaubey, Narayan Poudyal, Shishou Kang, Hamed Arami, John Griffis, J. Ping Liu

Research output: Contribution to journalArticlepeer-review

42 Scopus citations

Abstract

We report a two-step chemical solution process for synthesis of FePt/Au core/shell nanoparticles. First, FePt nanoparticles were synthesized using a typical polyol process. The as-synthesized FePt nanoparticles were then used as seed materials and were coated with gold shells by reduction of the gold precursors. The coated nanoparticles have been characterized using various structural and morphological measurements to confirm the FePt/Au core/shell morphology. The as-synthesized FePt/Au nanoparticles were found to be superparamagnetic and became ferromagnetic after annealing at 400 °C. The surface modification of FePt/Au core/ shell nanoparticles from hydrophobic to hydrophilic was achieved through ligand exchange to make them water dispersible for potential biomedical applications.

Original languageEnglish (US)
Pages (from-to)13088-13091
Number of pages4
JournalJournal of Physical Chemistry C
Volume113
Issue number30
DOIs
StatePublished - Jul 30 2009
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Energy
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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