The angular dependence of the exchange coupling between a Permalloy film and an antiferromagnetic Cr45.5Mn45.5Pt9 film has been measured. We show that this complex angular dependence of the exchange coupling can be understood by a simple Stoner–Wohlfarth model involving only a uniaxial anisotropy and a unidirectional exchange coupling at the interface. Numerical results are in excellent agreement with the experimental data.
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Xi et al. (1999) studied this question.
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