Improvement of structural and magnetic properties of L10-FePd nanocrystals by Co addition

András Kovács, Kazuhisa Sato, Yoshihiko Hirotsu

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)

Abstract

The effect of Co addition to magnetic properties of L10-FePd nanoparticles is investigated. Nanocrystalline films with Fd-Co-Fe particles were prepared by electron-beam deposition and subsequent annealing to obtain the ordered L10 structure. The L10-PdCoFe nanocrystals were formed up to 12 at % of Co concentrations with preferential c axis orientation. At higher Co concentrations, two-phase nanoparticles of L10 -PdCoFe and bcc-CoFe were formed. The saturation magnetization is increased with increasing the Co concentration. The saturation magnetization of L1 0-Pd51Co12Fe37 nanoparticles is estimated as 1252 emu/cm3 at room temperature. Since it possesses a decrease of L10 ordering temperature together with an enhancement of preferential easy axis formation and an increase of saturation magnetization, the Co addition is demonstrated the beneficial impact to L10-FePd nanoparticles.

Original languageEnglish
Pages (from-to)3097-3099
Number of pages3
JournalIEEE Transactions on Magnetics
Volume43
Issue number6
DOIs
Publication statusPublished - 2007 Jun
Externally publishedYes

Keywords

  • Magnetization
  • Perpendicular magnetic anisotropy
  • TEM

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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