Consequences of Spin-Flop Coupling in Exchange Biased Films
作者： T. C. Schulthess , W. H. Butler
DOI: 10.1103/PHYSREVLETT.81.4516
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摘要: Using a microscopic Heisenberg model which includes magnetostatic interactions, the Landau-Lifshitz-Gilbert equation of motion is solved in order to study several magnetic properties ferromagnetic/antiferromagnetic bilayers. For perfectly flat interfaces, it shown that spin-flop coupling does not lead exchange bias as has been proposed, but rather gives rise uniaxial anisotropy turn causes large coercivities observed biased films. The introduction interfacial defects leads correct magnitude.
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