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arXiv · 1103.5303

The effect of chemical disorder on the magnetic anisotropy of strained Fe-Co films

Carsten Neise·Stephan Schönecker·Manuel Richter·Klaus Koepernik·Helmut Eschrig
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Abstract

Strained Fe-Co films have recently been demonstrated to exhibit a large magnetocrystalline anisotropy (MCA) and thus to be of potential interest as magnetic storage material. Here, we show by means of density-functional (DF) calculations, that chemical order can remarkably enhance the MCA. We also investigate the effect of relaxation perpendicular to the applied strain and evaluate the strain energy as a function of Co concentration and substrate lattice parameter. On this basis, favourable preparation routes for films with a large perpendicular anisotropy are suggested.

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Carsten Neise, Stephan Schönecker, Manuel Richter, Klaus Koepernik, Helmut Eschrig. 2011-03-28. The effect of chemical disorder on the magnetic anisotropy of strained Fe-Co films. https://doi.org/10.1002/pssb.201147100

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