Magnetic Vortex Domain Wall Observation on Polycrystalline Imperfect Iron−Cobalt Alloy Nanowires Growing on 1050 Aluminum

Abstract

Nanowires (Nws) are 1D nanostructures in which there is a preferential direction of growth-leading to an aspect ratio greater than 10. Due to the quantum confinement effects of the 1D morphology and the large surface to volume ratio, Nws are promising materials for the fabrication of high-performance photodetectors, [1] supercapacitors, [2] fuel cell materials, [3] high-performance photoswitches, [4] and nanophotonics devices. [5] In particular, magnetic Nws are of more technological interest than other magnetic nanostructured materials [6] due to their higher multifunctional properties. For example, magnetic Nws have shown potential in bioengineering, [7] wireless magnetic manipulation, [8] magnetically powered adaptive Nw swimmers, [9] and spintronics. [10] Additional applications involve the design of new nanofabrication [11] and assembly [12] methods for understanding the magnetoresistance, [13] magnetoreactance, [14] and magnetization of individual Nws. [15]