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Published on: June 18, 2013
Well-aligned Nickel Nanochains Synthesized by a Template-free Route
Pengwei Li1, Rongming Wang, Weimeng Chen
1Key Laboratory of Micro-Nano Measurement-Manipulation and Physics (Ministry of Education) and Department of Physics, Beijing University of Aeronautics and Astronautics, 100191, Beijing, People's Republic of China. rmwang@buaa.edu.cn.
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.
