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Forschungszentrum Jülich Institut für Festkörperforschung
Layered magnetic structures: twisted ground state due to strong antiferromagnetic coupling
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M. Buchmeier, R. Gareev, D. E. Bürgler and P. Grünberg We have investigated the remagnetization behavior
of ferromagnetic doublelayers with strong an-tiferromagnetic interlayer
exchange coupling. If the coupling and external field are strong
enough a partial Bloch-type domain wall parallel to the interface
will form inside the ferromagnetic layers. This twisted groundstate
has to be taken into account when extracting the coupling constants
from hysteresis loops. Comparing experimental Magneto-Optic-Kerr-Effect
(MOKE) and Brillouin Light Scattering (BLS) data obtained from strongly
coupled Fe/Si/Fe Samples with a model calculation we find strong
evidence for the twisted state. |
