Reorientation transition of ultrathin ferromagnetic films

@article{Hucht1997ReorientationTO,
  title={Reorientation transition of ultrathin ferromagnetic films},
  author={Alfred Hucht and Klaus D. Usadel},
  journal={Physical Review B},
  year={1997},
  volume={55},
  pages={12309-12312}
}
We demonstrate that the reorientation transition from out-of-plane to in-plane magnetization with decreasing temperature as observed experimentally in Ni films on Cu(001) can be explained on a microscopic basis. Using a combination of mean-field theory and perturbation theory, we derive an analytic expression for the temperature-dependent anisotropy. The reduced magnetization in the film surface at finite temperatures plays a crucial role for this transition as with increasing temperature the… 
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