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Synthesis and Characterization of Fe-FeOx Core-Shell Nanowires
- Authors
- Lee, Ju Hun; Wu, Jun Hua; Lee, Ji Sung; Jeon, Ki Seok; Kim, Hae Ryong; Lee, Jong Heun; Suh, Yung Doug; Kim, Young Keun
- Issue Date
- 11월-2008
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Core-shell nanowires; iron; iron oxide; nano-Raman; nanostructure
- Citation
- IEEE TRANSACTIONS ON MAGNETICS, v.44, no.11, pp.3950 - 3953
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE TRANSACTIONS ON MAGNETICS
- Volume
- 44
- Number
- 11
- Start Page
- 3950
- End Page
- 3953
- ISSN
- 0018-9464
- 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.
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