Thermally activated domain-wall motion in ferromagnetic single crystals

Abstract

For picture‐frame‐type single‐crystal specimens of the ferromagnetic nickel‐base alloy PE 16, the dependence of the domain wall velocity v on the applied magnetic field H and on temperature T has been experimentally investigated for 1.7<TF (x), between the obstacle and the domain wall can directly be obtained from the experimental data. By using F (x), a relation H (v,T) can be reconstructed which is in perfect agreement with the experimental results. The obstalces, which interact with the domain wall, are probably single atoms or small clusters.