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Magnetic structures of exchange bias Ni/FeF_2(110) interface

机译:交换偏压Ni / FeF_2(110)界面的磁性结构

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Electronic and magnetic structures of ferromagnetic (FM)/antiferromagnetic (AFM), Ni/FeF_2(110), with a compensated AFM interface are investigated by using the full-potential linearized augmented plane-wave method. We find that magnetic structures at the AFM interface are perturbed by a contact with the FM material, where the superexchange interaction through the interface F excites and induces a small net moment at the AFM interface. These results predicted may play an important role for explaining the exchange bias in this system, and rule out the exchange bias mechanisms with the spin-flop coupling and the magnetic moment reorientation.
机译:利用全电位线性化增强平面波方法研究了具有补偿的AFM界面的铁磁(FM)/反磁(AFM),Ni / FeF_2(110)的电子和磁性结构。我们发现,AFM界面处的磁性结构会受到与FM材料的接触的干扰,其中通过界面F的超交换相互作用会激发并在AFM界面处引起一个小的净矩。预测的这些结果可能在解释该系统中的交换偏置方面起重要作用,并排除了具有自旋触发器耦合和磁矩重新定向的交换偏置机制。

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