Laser synthesis and magnetism of amorphous iron and cobalt carbide nanoparticles with carbon onion

Seung H. Huh, Atsushi Nakajima

Research output: Contribution to journalArticle

18 Citations (Scopus)

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 languageEnglish
Article number064302
JournalJournal of Applied Physics
Volume99
Issue number6
DOIs
Publication statusPublished - 2006 Apr 20
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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