Abstract
A simple approach combining pyrolysis and hydrogen reduction is formulated for making ferromagnetic-branched nanostructures called Co multipods. The CoO multipods (branched nanostructures) were produced through the pyrolysis of cobalt-oleate in octadecane at 280°C with the presence of oleic acid under the protection of pure nitrogen. The angles between the nearest arms are 90°. After the reduction of the branched CoO nanostructures in flowing hydrogen gas in a tubular oven at 290°C, the CoO is reduced to pure cobalt with hexagonal crystal structure and the branched shapes are retained. Anisotropic magnetic properties were found for cobalt multipods on silicon substrates.
Original language | English (US) |
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Pages (from-to) | 3115-3117 |
Number of pages | 3 |
Journal | IEEE Transactions on Magnetics |
Volume | 43 |
Issue number | 6 |
DOIs | |
State | Published - Jun 2007 |
Keywords
- Chemical synthesis
- Co multipods
- Hydrogen reduction
- Magnetically anisotropic
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering