Magneto-sensitive nickel nanowires fabricated by electrodeposition into multi- and single-ion track templates

• Polycarbonate templates of ( 30 +/- 1) mu m thickness containing cylindrical etched-track nanochannels of ( 500 +/- 50) nm diameter were used for electrodeposition of Ni nanowires. Using 10(4) channels per cm(2), the most favourable deposition potential of -1.0 V was determined in a potentiostatic mode by varying the deposition potential with respect to an Ag/AgCl reference electrode over a range between -0.1 V and -1.5 V. The deposition efficiency at -1.0 V was estimated around 10%. The resulting single wires had a resistance around 200 W and showed an anisotropic magnetoresistance (AMR) effect of 1%, applicable to directionally sensitive magnetic field sensors.

Nyckelord

electrodeposition

ion beam

magnetoresistance

nanochannel

nickel

polycarbonate

TECHNOLOGY

TEKNIKVETENSKAP

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