Ferromagnetic iron boride (Fe 3B) nanowires

Yan Li, Emma Tevaarwerk, R. P.H. Chang

Research output: Contribution to journalArticlepeer-review

20 Citations (Scopus)


Single-crystal iron boride (Fe 3B) nanowires were synthesized on Pt and Pd (Pt/Pd) coated sapphire substrates by a chemical vapor deposition method at 800°C using boron triiodide (BI 3) and iron iodide (FeI 2) as precursors. Morphology of the Fe 3B nanowires can be controlled by manipulating the Pt/Pd film thickness and the growth time. Transmission electron microscopy and selected area electron diffraction were used to analyze the crystal structures of these novel materials. Electron energy-loss spectroscopy and X-ray energy-dispersive spectroscopy studies on these nanowires confirm that they are composed of boron and iron. Scanning electron microscopy was employed to observe the morphology of these nanomaterials. The typical size of the iron boride nanowires is about 5-50 nm in width and 2-30 μm in length. The vapor - liquid - solid (VLS) growth process is shown to be the growth mechanism of the Fe 3B nanowires. Room temperature magnetic force microscopy investigations on the iron boride nanowires suggest that they are ferromagnetic nanowires with a single-domain configuration.

Original languageEnglish
Pages (from-to)2552-2557
Number of pages6
JournalChemistry of Materials
Issue number10
Publication statusPublished - May 16 2006

ASJC Scopus subject areas

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

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