Monosized core-shell Fe 3O 4(Fe)/Au multifunctional nanocrystals

Hong Ling Liu, Jun Hua Wu, Ji Hyun Min, Ju Hun Lee, Young-geun Kim

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We have synthesized highly crystalline, monosized Fe 3O 4(Fe)/Au magnetic-optic multifunctional nanocrystals using a modified polyol process. The formation of the core-shell structure was achieved in two consecutive steps, seeding the Fe 3O 4(Fe) core followed by coating the gold shell. The characterization demonstrates the core-shell nanostructure and provides particle size and distribution of the nanocrystals. The spectroscopic analysis gives three Fe oxidation states (Fe 0, Fe +2 and Fe +3) in the core and the surface plasmon characteristic of the Au nanoshell, while the magnetic measurements show excellent susceptibility of the nanocrystals.

Original languageEnglish
Pages (from-to)754-758
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number2
DOIs
Publication statusPublished - 2009 Feb 1

Keywords

  • Core-Shell
  • Magnetic
  • Multifunctional
  • Nanoparticles
  • Optical

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Chemistry(all)
  • Materials Science(all)
  • Bioengineering
  • Biomedical Engineering

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