Rapid note

Zeitschrift für Physik B Condensed Matter

, Volume 101, Issue 1, pp 1-2

First online:

Micromagnetic properties and magnetization switching of single domain Co dots studied by magnetic force microscopy

  • M. LöhndorfAffiliated withInstitute of Applied Physics and Microstructure Research Center, University of Hamburg
  • , A. WadasAffiliated withInstitute of Applied Physics and Microstructure Research Center, University of Hamburg
  • , G. LütjeringAffiliated withMax-Planck-Institut für Festkörperforschung
  • , D. WeissAffiliated withMax-Planck-Institut für FestkörperforschungInstitut für Experimentelle und Angewandte Physik, Universität Regensburg
  • , R. WiesendangerAffiliated withInstitute of Applied Physics and Microstructure Research Center, University of Hamburg

Rent the article at a discount

Rent now

* Final gross prices may vary according to local VAT.

Get Access

Abstract

Magnetic force microscopy was applied to study the magnetic properties of Co dot microstructures. The high density magnetic dot arrays were fabricated using nanolithographic techniques on GaAs substrates. The ferromagnetic Co dots were found to be in a single domain state for Co film thicknesses of 7 nm and 17 nm. The magnetization of the as-prepared Co dot array was found to be in a non-uniform state. After applying a magnetic field the Co dots are in a uniform magnetization state. Induced switching of the magnetization of single Co dots by the stray field of the probing tip using an additionally applied in-situ magnetic field has been demonstrated.

PACS

61.16.ch 75.60.ch 75.60.-d