Assembly of high-anisotropy L10 FePt nanocomposite films

D. J. Sellmyer, Yingfan Xu, Minglang Yan, Yucheng Sui, Jian Zhou, R. Skomski

Research output: Contribution to journalArticlepeer-review

29 Scopus citations

Abstract

In this paper we report results on the synthesis and magnetic properties of L10 FePt nanocomposite films. Three fabrication methods have been developed to produce high-anisptropy FePt films: non-epitaxial growth of (0 0 1)-oriented FePt:X (X=Ag, C) composite films that might be used for perpendicular media; monodispersed FePt(CFx) core-shell nanocluster-assembled films grown with a gas-aggregation technique and having uniform cluster size and narrow size distribution; and template-mediated self-assembled FePt clusters prepared with chemical synthesis by a hydrogen reduction technique, which has a high potential for controlling both cluster size and orientation. The magnetic properties are controllable through variations in the nanocluster properties and nanostructure. Analytical and numerical simulations have been done for these films, providing better understanding of the magnetization reversal mechanisms. The films show promise for development as magnetic recording media at extremely high areal densities.

Original languageEnglish (US)
Pages (from-to)302-308
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume303
Issue number2 SPEC. ISS.
DOIs
StatePublished - Aug 2006

Keywords

  • FePt
  • L1 ordering
  • Magnetic anisotropy
  • Nanoclusters
  • Nanocomposite

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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