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Magnetic interactions in compositionally modulated nanowire arrays

机译：成分调制的纳米线阵列中的磁相互作用

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Series of high hexagonally ordered compositionally modulated nanowire arrays, with different Cu layer and FeCoCu segment thicknesses and a constant diameter of 35 nm, were fabricated by electroplating from a single electrolytic bath into anodic aluminum oxide membranes. The objective of the study was to determine the influence of ferromagnetic (FM) segment and non-ferromagnetic (NFM) layer thickness on the magnetic properties, particularly coercivity and magnetic interactions. First-order reversal curve (FORC) measurements and simulations were performed to quantify the effect of the inter-/intra-nanowire magnetostatic interactions on the coercivity and interaction field distributions. The FORC coercivity increases for a thick NFM layer and long FM segments due to decoupling of the the FM segments and the increased shape anisotropy, respectively. On the other hand, the interaction field presents a parallel strong reduction for a thick NFM layer and thin FM segments, which is ascribed to a similar NFM/FM thickness ratio and degree of FM segment decoupling along the nanowire.
机译：通过从单个电解浴电镀到阳极氧化铝膜中，制造了一系列具有不同Cu层和FeCoCu链段厚度且恒定直径为35 nm的高六角形有序成分调制纳米线阵列。该研究的目的是确定铁磁（FM）段和非铁磁（NFM）层厚度对磁性能（特别是矫顽力和磁相互作用）的影响。进行了一阶反转曲线（FORC）测量和模拟，以量化纳米线之间/内部的静磁相互作用对矫顽力和相互作用场分布的影响。对于厚的NFM层和较长的FM段，由于FM段的去耦和形状各向异性的增加，FORC矫顽力分别增加。另一方面，相互作用场对于厚的NFM层和薄的FM段呈现出平行的强减小，这归因于相似的NFM / FM厚度比和FM段沿纳米线的解耦程度。

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