Micromagnetic Simulations of Magnetic Nanowires

Abstract

This dissertation studies how magnetic switching can be formed in magnetic nanowires by using Object-Oriented Micromagnetic Framework software. Because this project was done entirely in a simulation way, scripts were used by adapting standard problems for dynamic and static states and there were various values for width and thickness ranging from 50nm to 600nm and from 5nm to 30nm, respectively. The results for dynamic state showed that when width and thickness had small values transverse wall appeared, but when they had large values vortex wall presented. There were some values in between indicated to asymmetry transverse wall and undefined wall were found for width and thickness in high values. On the other hand, static state had two types which were transverse and vortex. The former was for the small width and thickness and the latter was for the large values. These types of walls emerged due to the influence of exchange energy for transverse form and magnetostatic energy for vortex form.