Exchange bias in Ag/FeCo/Ag core/shell/shell nanoparticles due to partial oxidation of FeCo intermediate shell

Mari Takahashi, Priyank Mohan, Derrick M. Mott, Shinya Maenosono

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

Recently we developed magnetic-plasmonic Ag/FeCo/Ag core/shell/shell nanoparticles for the purpose of biological applications. In these heterostructured nanoparticles, exchange bias is observed as a result of the formation of an interface between ferromagnetic FeCo and antiferromagnetic CoxFe1-xO due to the partial oxidation of the FeCo intermediate shell. In this study we thoroughly characterized the surface oxide layer of the FeCo shell by XPS, XRD and SQUID magnetometer.

Original languageEnglish
Pages (from-to)339-344
Number of pages6
JournalJournal of Magnetism and Magnetic Materials
Volume401
DOIs
Publication statusPublished - 2016 Mar 1
Externally publishedYes

Keywords

  • Cobalt-wüstite
  • Exchange bias
  • Hybrid nanoparticles
  • Iron cobalt

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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