论文标题
相互作用和非均匀磁状态对铁纳米线阵列的磁化逆转的影响
Effect of interactions and non-uniform magnetic states on the magnetization reversal of iron nanowire arrays
论文作者
论文摘要
由于可能的应用多样性，对有序的铁磁纳米线阵列进行了广泛的研究。但是，仍然对阵列参数与其磁性行为之间的关系仍然没有完全理解。涡流状态对大直径纳米线的磁化逆转的影响尤其令人感兴趣。在这里，我们将分析和微磁模型与三个阵列的铁纳米线阵列进行了比较，直径为33、52和70 nm，以找到用于计算的近似值和资源之间的平衡。讨论了涡流状态的影响以及互动相互作用对到序曲线的影响。已经发现，在大直径纳米线的情况下，通过平均场模型处理的7种纳米线能够很好地再现整个阵列的逆转行为。涡流状态倾向于降低结构不均匀性对逆转过程的影响，从而导致系统的可预测性提高。
Ordered ferromagnetic nanowire arrays are widely studied due to the diversity of possible applications. However, there is still no complete understanding of the relation between the array's parameters and its magnetic behavior. The effect of vortex states on the magnetization reversal of large-diameter nanowires is of particular interest. Here, we compare analytical and micromagnetic models with experimental results for three arrays of iron nanowires with diameters of 33, 52 and 70 nm in order to find the balance between the number of approximations and resources used for the calculations. The influence of the vortex states and the effect of interwire interactions on the remagnetization curves is discussed. It has been found that 7 nanowires treated by a mean field model are able to reproduce well the reversal behaviour of the whole array in the case of large diameter nanowires. Vortex states tend to decrease the influence of the structural inhomogeneities on reversal process and thus lead to the increased predictability of the system.
