Monodisperse face-centred tetragonal FePt nanoparticles with giant coercivity

Kevin Elkins*, Daren Li, Narayan Poudyal, Vikas Nandwana, Zhiqiang Jin, Kanghua Chen, J. Ping Liu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

148 Scopus citations

Abstract

Monodisperse face-centred tetragonal (fct) FePt nanoparticles with high magnetic anisotropy and, therefore, high coercivity have been prepared via a new heat treatment route. The as-synthesized face-centred cubic FePt nanoparticles were mixed with salt powders and annealed at 700°C. The salts were then removed from the particles by washing the samples in water. Monodisperse fct FePt particles were recovered with the particle size and shape being retained. Coercivity of the isolated particles up to 30 kOe at room temperature has been obtained.

Original languageEnglish (US)
Pages (from-to)2306-2309
Number of pages4
JournalJournal of Physics D: Applied Physics
Volume38
Issue number14
DOIs
StatePublished - Jul 21 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Acoustics and Ultrasonics
  • Surfaces, Coatings and Films

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