Angular dependence of the magnetization reversal in exchange-biased Fe/MnF2
- Author(s): Arenholz, Elke
- Liu, Kai
- et al.
Published Web Locationhttp://scitation.aip.org/getpdf/servlet/GetPDFServlet?filetype=pdf&id=APPLAB000087000013132501000001&idtype=cvips
A detailed study of exchange-biased Fe/MnF2 bilayers using magneto-optical Kerr effect shows that the magnetization reversal occurs almost fully through domain wall nucleation and propagation for external fields parallel to the exchange-bias direction. For finite angles between bias and external field, the magnetization is aligned perpendicular to the cooling-field direction for a limited field range for decreasing fields. For external fields perpendicular to the bias direction, the magnetization aligns with the cooling-field direction for descending and ascending fields before fully reversing. The field range for which the magnetization is close to perpendicular to the external field can be estimated using a simple effective-field model.