The Influence of Magnetic Interaction on Magnetic Structure of Domain Walls in Metallic Ferromagnetic Nanofilms

Resumo

Using transmission electron microscopy, the structure of domain walls is investigated in Fe_0.2–Ni_0.8 alloy and nickel nanofilms. It is shown that it is controlled not only by the film thickness but also by the angle between the magnetization vector I_s and the easy magnetization axis. Applying an external magnetic field along the hard magnetization axis, the field values at which the domain wall structure varies are considered. As the domain wall density becomes higher, the field interval, where magnetization variations occur, is found to increase sharply.