Abstract
Amorphous iron or cobalt carbide nanoparticles with a carbon onion structure were produced using a pulsed laser ablation of metallocene powders at room temperature. While they are ferromagnetic at room temperature, they exhibit a drastic change in magnetic spin moments at 20-30 K. These magnetic properties are ascribed to a considerable magnetic contribution of superparamagnetism for the amorphous iron or cobalt carbide nanoparticles with a carbon onion and the origin of the magnetic properties is discussed.
Original language | English |
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Article number | 064302 |
Journal | Journal of Applied Physics |
Volume | 99 |
Issue number | 6 |
DOIs | |
Publication status | Published - 2006 |
Externally published | Yes |
ASJC Scopus subject areas
- Physics and Astronomy(all)