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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Magnetic properties engineering of nanopatterned cobalt antidot arrays
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Magnetic properties engineering of nanopatterned cobalt antidot arrays

机译:纳米图案钴解毒剂阵列的磁性能工程

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We report on the study of arrays of 60 nm wide cobalt antidots, nanopatterned using focused ion beam milling. Square and hexagonal symmetry arrays have been studied, with varying antidot densities and lattice constant from 150 up to 300 nm. We find a strong increase of the arrays' magnetic coercivity with respect to the unpatterned film, which is monotonic as the antidot density increases. Additionally, there is a strong influence of the array symmetry to the in-plane magnetic anisotropy: square arrays exhibit fourfold symmetry and hexagonal arrays exhibit sixfold symmetry. The above findings are corroborated by magnetic imaging and micromagnetic modeling, which show the magnetic structure of the arrays to depend strongly on the array morphology.
机译:我们报告了使用聚焦离子束铣削纳米图案化的60 nm宽钴解毒剂阵列的研究。已经研究了正方形和六角形对称阵列,其反点密度和晶格常数从150到300 nm不等。我们发现,相对于未图案化的薄膜,阵列的磁性矫顽力大大提高,随着解毒点密度的增加,磁性矫顽力是单调的。另外,阵列对称性对面内磁各向异性有很大的影响:正方形阵列表现出四重对称性,而六角形阵列表现出六重对称性。磁成像和微磁模型证实了以上发现,这些结果表明阵列的磁性结构在很大程度上取决于阵列的形态。

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