Abstract
Nanoparticles of iron carbide wrapped in multilayered graphitic sheets were synthesized by a newly developed method in which an electric plasma was flashed in an ultrasonic cavitation field in liquid ethanol. The size of the carbon nanocapsules ranged between 5 and 600 nm. The crystal structures of the spherical cores were found to be orthorhombic Fe3C and monoclinic χ-Fe2.5C. Some spherical particle cores were also discovered in the amorphous state. The magnetic hysteresis loop of the synthesized powder at room temperature showed a saturation magnetization of 51.36 A m2 kg-1 and coercivity of 3.4 kA m-1.
Original language | English |
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Pages (from-to) | 34-38 |
Number of pages | 5 |
Journal | Materials Chemistry and Physics |
Volume | 98 |
Issue number | 1 |
DOIs | |
Publication status | Published - 2006 Jul 1 |
Keywords
- Carbides
- Electron microscopy
- Magnetic properties
- Plasma discharge
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics