Influence of stray fields on the switching-field distribution for bit-patterned media based on pre-patterned substrates

  title={Influence of stray fields on the switching-field distribution for bit-patterned media based on pre-patterned substrates},
  author={Bastian Pfau and Christian M. G{\"u}nther and Erik Guehrs and Thomas Hauet and Tyler Hennen and Stefan Eisebitt and Olav Hellwig},
  journal={Applied Physics Letters},
Using a direct imaging method, we experimentally investigate the reversal of magnetic islands in a bit-patterned media sample based on a pre-patterned substrate. Due to systematic variation of the island distances in the media, we are able to study the influence of the dipolar interaction on the switching-field distribution of the island ensemble. The experimental findings are explained by an analytical magnetostatic model that allows us to quantify the different components of the demagnetizing… 

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