Uniform Nickel Deposition into Ordered Alumina Pores by Pulsed Electrodeposition

Ordered arrays of nickel nanowires have been prepared using pulsed electrodeposition. Two self-patterning anodization processes were used to fabricate alumina pore matrices into which nickel was deposited from a Watts bath: two short millisecond deposition pulses followed by a long delay yielded almost 100 % filled pores (see Figure). Nanowire arrays are expected to have important applications as magnetic memories.