Abstract
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 templatewith tailored lattice parameter and hexagonal symmetry. A nanostructured Comagnetic film is then deposited by sputtering onto the polymer surface so keepingthe high ordering induced by the precursor template. The magnetic propertiesdepend on the polymer periodicity as well as on the sputtering conditions. Inparticular, single-domain or multidomain structures have been identified insideevery Co/polymer hill depending on the lattice parameter. Moreover, an intrinsicdistribution of the magnetic anisotropy can be deduced from the hysteresis loops.
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