Nano Express

Nanoscale Research Letters

, Volume 5, Issue 2, pp 379-382

Open Access This content is freely available online to anyone, anywhere at any time.

Synthesis and Magnetic Characterization of Metal-filled Double-sided Porous Silicon Samples

  • K. RumpfAffiliated withInstitute of Physics, Karl Franzens University Email author 
  • , P. GranitzerAffiliated withInstitute of Physics, Karl Franzens University
  • , P. PoeltAffiliated withInstitute for Electron Microscopy, University of Technology

Abstract

A magnetic semiconductor/metal nanocomposite with a nanostructured silicon wafer as base material and incorporated metallic nanostructures (Ni, Co, NiCo) is fabricated in two electrochemical steps. First, the silicon template is anodized in an HF-electrolyte to obtain a porous structure with oriented pores grown perpendicular to the surface. This etching procedure is carried out either in forming a sample with a single porous layer on one side or in producing a double-sided specimen with a porous layer on each side. Second, this matrix is used for deposition of transition metals as Ni, Co or an alloy of these. The achieved hybrid material with incorporated Ni- and Co-nanostructures within one sample is investigated magnetically. The obtained results are compared with the ones gained from samples containing a single metal.

Keywords

Nanocomposite material Ferromagnetic nanostructures Paramagnetic behaviour