Carbon encapsulated iron carbide nanoparticles synthesized in ethanol by an electric plasma discharge in an ultrasonic cavitation field

Ruslan Sergiienko, Etsuro Shibata, Zentaro Akase, Hiroyuki Suwa, Takashi Nakamura, Daisuke Shindo

Research output: Contribution to journalArticlepeer-review

51 Citations (Scopus)

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 languageEnglish
Pages (from-to)34-38
Number of pages5
JournalMaterials Chemistry and Physics
Volume98
Issue number1
DOIs
Publication statusPublished - 2006 Jul 1

Keywords

  • Carbides
  • Electron microscopy
  • Magnetic properties
  • Plasma discharge

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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