ABSTRACT
The interest of the scientific community on magnetic nanostructures experienced a continuous increase over the last years thanks to the high potential of these materials in many technological applications, as well as for the study of several fundamental properties.1,2
The magnetic behavior of thin films can be tailored by introducing artificial defects.3−6 Patterned magnetic domain structures have revealed many useful properties that can be applied to magnetic sensors and memories. Their magnetic anisotropy, coercivity, and remanence, of technological interest, can be tailored by controlling geometry parameters as antidot size, separation among them, and film thickness. Alternatively, anodic aluminium oxide (AAO) are increasingly used as templates to prepare such antidot films. Micromagnetic modeling confirms the presence of domain walls and regions with different magnetization directions, due to the tendency of the magnetization to follow the edges of the antidots. In this work, nanoporous alumina membranes were used as templates for the fabrication of magnetic antidote. Nanohole arrays were shown long-range ordering and had been studied both theoretically and experimentally in this report.
