Structure of micromagnetic formations arising on defects in garnet-ferrite films

Abstract

Properties of magnetic inhomogeneities formed in magnetically uniaxial films on defects of certain types have been investigated theoretically and experimentally. According to calculations, these inhomogeneities, which correspond to 0° domain walls, can be of two types that differ in size and energy. It is shown that type-II inhomogeneities, which are much greater in size than those of type I, can become stable formations in the plates of finite thickness. The results obtained are compared with the experimental observations of the domain structure of films of garnet ferrites. The possible contribution of type-II inhomogeneities to the processes of the static and dynamic magnetization reversal of real magnets has been considered.