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Nanostructured Co film on ordered polymer nanohills: a base for novel magnetic nanostructures

机译:有序聚合物纳米丘上的纳米结构Co膜:新型磁性纳米结构的基础

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摘要

The preparation of a nanostructured polymer (poly(methyl methacrylate)-PMMA) replicating the order of an anodized aluminium (Al) template is first described. Nanohills at the PMMA surface are structured following the ordering of the template with tailored lattice parameter and hexagonal symmetry. A nanostructured Co magnetic film is then deposited by sputtering onto the polymer surface so keeping the high ordering induced by the precursor template. The magnetic properties depend on the polymer periodicity as well as on the sputtering conditions. In particular, single-domain or multidomain structures have been identified inside every Co/polymer hill depending on the lattice parameter. Moreover, an intrinsic distribution of the magnetic anisotropy can be deduced from the hysteresis loops.
机译:首先描述了纳米结构的聚合物(聚(甲基丙烯酸甲酯)-PMMA)的复制,该聚合物复制了阳极氧化铝(Al)模板的顺序。 PMMA表面的Nanohills是按照模板的顺序进行结构化的,该模板具有定制的晶格参数和六边形对称性。然后通过溅射将纳米结构的Co磁性膜沉积到聚合物表面上,从而保持由前体模板引起的高度有序性。磁性取决于聚合物的周期性以及溅射条件。特别地,已经根据晶格参数在每个共聚物/聚合物山中识别出单畴或多畴结构。此外,可以从磁滞回线推导出磁各向异性的本征分布。

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