Magnetization reversal of individual Co nanoislands.

@article{Ouazi2012MagnetizationRO,
  title={Magnetization reversal of individual Co nanoislands.},
  author={Safia Ouazi and Sebastian Wedekind and Guillemin Rodary and Hirofumi Oka and Dirk Sander and J{\"u}rgen Kirschner},
  journal={Physical review letters},
  year={2012},
  volume={108 10},
  pages={107206}
}
We investigate the magnetization reversal of individual Co islands on Cu(111) in the size range of N=700 to 18,000 atoms by spin-polarized scanning tunneling microscopy at 8 K. The switching field H(sw) changes with island size in a nonmonotonic manner: it increases with island size and reaches a maximum value of 2.4 T at N=5500 atoms, and it decreases for larger islands. We extract the energy barrier for magnetization reversal as a function of island size. The maximum H(sw) corresponds to an… CONTINUE READING

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