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Ni NANOWIRES ELECTRODEPOSITED IN SINGLE ION TRACK TEMPLATES

M. Daub1,2, I. Enculescu1,3,* , R. Neumann1, R. Spohr1

Affiliation

  1. Gesellschaft für Schwerionenforschung (GSI), Planckstr. 1, 64291 Darmstadt, Germany
  2. Max-Planck-Institute for Microstructure Physics, Weinberg 2, 06120 Halle, Germany
  3. National Institute of Materials Physics, Atomistilor 105, 76900 Bucuresti-Magurele, Romania

Abstract

30-µm thick polycarbonate foils were irradiated with single swift heavy ions (e.g. Au 11.4 MeV/nucleon). After etching with solutions containing NaOH and methanol, templates containing single conical pores were obtained. The size and the shape of the nanopores depend on etching conditions such as time of etching, concentration and temperature of the etching solution. By electrochemical deposition of nickel, nanowires were grown in the single pores. The nanowires were contacted by sputtering a gold layer on top of the membrane. The magnetic measurements indicated that the nanowires possess around 1% anisotropic magnetoresistance. The current-voltage characteristic of a Ni nanowire shows a linear behavior for current densities smaller than 108 A/cm2. The maximum current density that a single Ni wire can withstand was found to be 3×108 A/cm2..

Keywords

Electrodeposition, Nanowires, Anisotropic magnetoresistance.

Submitted at: June 24, 2004
Accepted at: March 23, 2005

Citation

M. Daub, I. Enculescu, R. Neumann, R. Spohr, Ni NANOWIRES ELECTRODEPOSITED IN SINGLE ION TRACK TEMPLATES, Journal of Optoelectronics and Advanced Materials Vol. 7, Iss. 2, pp. 865-870 (2005)