Synthesis and characterization of Fe - FeOx core-shell nanowires

Ju Hun Lee, Jun Hua Wu, Ji Sung Lee, Ki Seok Jeon, Hae Ryong Kim, Jong Heun Lee, Yung Doug Suh, Young-geun Kim

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12 Citations (Scopus)

Abstract

We report the synthesis and characterization of Fe - FeOx core-shell nanowires by thermal conversion of the Fe nanowires from pulse electrodeposition in anodized aluminum oxide (AAO) nanotemplates under various conditions. Well-defined core-shell nanostructure of the Fe - FeOx nanowires was confirmed by TEM and corresponding elemental line scanning and point scanning. The type of the iron oxide in the shell was identified using nano-Raman spectroscopy, which exposes magnetite to be the major constituent. The magnetic measurements demonstrate that the nanowires are robustly soft magnetic, with the magnetization tunable by heat treatment parameters and a weak magnetic easy direction parallel to the nanowire axis.

Original languageEnglish
Pages (from-to)3950-3953
Number of pages4
JournalIEEE Transactions on Magnetics
Volume44
Issue number11 PART 2
DOIs
Publication statusPublished - 2008 Nov 1

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Keywords

  • Core-shell nanowires
  • Iron
  • Iron oxide
  • Nano-Raman
  • Nanostructure

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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