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Enhanced magnetic anisotropy of Ni nanowire arrays fabricated on nano-structured silicon templates

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6 Author(s)
Granitzer, P. ; Institute of Physics, Karl Franzens University Graz, Universitaetsplatz 5, A-8010 Graz, Austria ; Rumpf, K. ; Ohta, T. ; Koshida, N.
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The magnetic function of a Ni-nanowire/silicon-template system has been explored in corporation with an advanced process. Arrays of nanopores with a mean diameter of 35 nm have been fabricated by anodization of silicon wafers under an external magnetic field (8 T) perpendicular to the substrate. Due to a guided supply of holes from the substrate during the anodization, well controlled straight nanopores have been formed with a high aspect ratio, and then isolated Ni nanowires have been grown along these nanopores by electrodeposition. The fabricated samples show a significantly enhanced magnetic anisotropy with little crosstalk between adjacent pores.

Published in:

Applied Physics Letters  (Volume:101 ,  Issue: 3 )

Date of Publication:

Jul 2012

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