Influence of adsorption-desorption processes on dynamics of 180° domain wall in iron

Anomalously high surface deceleration of the domain wall and magnetic stray field micro-distribution over a surface of amorphous ferromagnet

“…Different results were obtained in a study of 1801 DW volume and surface oscillations in filiform iron monocrystals (whiskers), materials with a nearly perfect crystal structure in the volume and on the surface of the samples [2]. With the increase of frequency DW oscillation amplitude on the surface of iron whiskers turns to decrease significantly faster than in the volume.…”

“…With the increase of frequency DW oscillation amplitude on the surface of iron whiskers turns to decrease significantly faster than in the volume. The experiments performed led to the conclusion that the anomalous DW behavior was caused by weak adsorption of water molecules from the ambient air on the iron crystal surface through hydrogen-bond formation [2]. As a result of the adsorption, the density of magnetic defect increases together with the efficient DW deceleration on the surface.…”