Synthesis of magnetic CoPt/SiO2 core-shell nanoparticles

Takafumi Seto, Kenji Koga, Fumiyoshi Takano, Hiroyuki Akinaga, Takaaki Orii, Makoto Hirasawa, Mitsuhiro Murayama

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

Core-shell nanoparticles composed of ferromagnetic cobalt platinum cores covered by non-magnetic silica shells were synthesized by laser ablating a composite target in a helium background gas. The average diameter of the CoPt core was controlled by adjusting the CoPt/SiO2 ratio of the ablation target. The particles were also classified in the gas phase using an electrical mobility classifier. The present method successfully synthesized nearly monodispersed nanoparticles with an average core diameter of 2.5nm. This article describes the synthesis of the core-shell nanoparticles and investigates their magnetic properties.

Original languageEnglish
Article number054
Pages (from-to)255-258
Number of pages4
JournalJournal of Physics: Conference Series
Volume59
Issue number1
DOIs
Publication statusPublished - Apr 1 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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