Formation of Nickel Nanowires via Electroless Deposition Under a Magnetic Field

  • Kawamori M
  • Yagi S
  • Matsubara E
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Abstract

Co-Ni nanowires 40100 nm in diameter with several dozen µmof length were prepared via electroless deposition under a magnetic field. The formation of Co-Ni nanowires was investigated by an in-situ mixed potential measurement and a cyclic voltammetry combined with a quartz crystal microbalance electrode. These electrochemical measurements revealed that the deposition rate of nickel on nickel is lower than that of cobalt on cobalt. Nickel works as an inhibitor in a growth process of Co-Ni alloys. Thus, the thickness of Co-Ni alloy nanowires is drastically reduced by the addition of Ni(II) in solution. The morphology of Co-Ni nanowires is also strongly affected by themagnetization of Co-Ni alloy nanoparticles which are precursors in the formation of nanowires. Both the magnetization and the deposition rate in Co-Ni alloys are the key parameters to control the aspect ratio and surface morphology of nanowires

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Authors

  • Makoto Kawamori

  • Shunsuke Yagi

  • Eiichiro Matsubara

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