Nano Express

Nanoscale Research Letters

, Volume 5, Issue 3, pp 597-602

Open Access This content is freely available online to anyone, anywhere at any time.

Well-aligned Nickel Nanochains Synthesized by a Template-free Route

  • Pengwei LiAffiliated withKey Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education) and Department of Physics, Beijing University of Aeronautics and Astronautics
  • , Rongming WangAffiliated withKey Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education) and Department of Physics, Beijing University of Aeronautics and Astronautics Email author 
  • , Weimeng ChenAffiliated withDepartment of Physics, Peking University
  • , Chinping ChenAffiliated withDepartment of Physics, Peking University Email author 
  • , Xingyu GaoAffiliated withDepartments of Physics, National University of Singapore
  • , A. T. S. WeeAffiliated withDepartments of Physics, National University of Singapore

Abstract

Highly uniform and well-aligned one-dimensional Ni nanochains with controllable diameters, including 33, 78, and 120 nm, have been synthesized by applying an external magnetic field without any surface modifying agent. The formation can be explained by the interactions of magnetic dipoles in the presence of applied magnetic field. Magnetic measurements demonstrate that the shape anisotropy dominates the magnetic anisotropy. The demagnetization factor, ∆N, is in the range of 0.23–0.36.

Keywords

Ni nanostructure Magnetic anisotropy X-ray absorption spectroscopy Electron microscopy