Variation of the domain-wall relaxation frequency in an amorphous ferromagnet under adsorption of methanol molecules

Using a magnetooptical method, a reversible decrease in the relaxation frequency of a domain wall on the surface of an amorphous soft ferromagnet during adsorption of methanol molecules was observed. The detected effect is explained by the appearance of magnetic defects that form in the adsorption of methanol molecules on the ferromagnet's surface, a process in which hydrogen bonds are formed. The results of this research and the earlier data on the effect of reversible adsorption of water molecules on the dynamics of the domain walls in ferromagnets are compared.