Synthesis of monosized magnetic-optical AuFe alloy nanoparticles

Hong Ling Liu, Jun Hua Wu, Ji Hyun Min, Young Keun Kim

Research output: Contribution to journalArticlepeer-review

42 Citations (Scopus)


We report the preparation and characterization of multifunctional AuFe alloy nanoparticles of three compositions, Au0.25 Fe0.75, Au0.5 Fe0.5, and Au0.75 Fe0.25, by a polyol process. It is found that the fusion of the two elements into one nanostructure entity retains the optical and magnetic properties of the individual components. The x-ray diffraction and transmission electron microscopy analyses confirm the formation of the alloy nanostructure with a narrow distribution of particle sizes and provides the detailed structural arrangements. The magnetic investigation shows the superparamagnetic or soft ferromagnetic behavior of the nanoparticles at room temperature, whereas the UV-visible measurements display the variation of the absorption bands at ∼560 nm. The AuFe nanoparticles are rendered water soluble after thiolation.

Original languageEnglish
Article number07D529
JournalJournal of Applied Physics
Issue number7
Publication statusPublished - 2008

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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