Top view SEM image of the AAO template prepared by a two-step anodizing method under 18 V in 0.3 mol/l aqueous solution for 2 h at . The average pore diameter and interpore distance are 30 and 50 nm, respectively.
Schematic diagram of the growth mechanisms of Co nanowires deposited into the nanoscale pores of AAO template: (a) high current density and (b) relatively low current density (Ref. 14).
Voltage-time and current density-time curves for two electrodeposition methods: (a) constant voltage ac electrodeposition and (b) multistep ac electrodeposition.
TEM images of Co nanowires: (a) top view of partly dissolved AAO template with Co nanowires, (b) released Co nanowires, and (c) electron diffraction patterns for single nanowire.
loops of the Co nanowires when and (where is the angle between the applied magnetic field and the axial direction of the nanowires).
Change curves of coercivity and remnant ratio of Co nanowires depending on different .
Magnetic structures for different models: (a) chain-of-spheres model: symmetric fanning mechanism, (b) chain-of-prolate-spheroids model: symmetric fanning mechanism, and (c) single prolate spheroid model (Refs. 32–34).
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