Mechanism of domain wall interaction with electric field in iron garnet films

Abstract

Domain walls in ferrimagnetic iron garnet films move under the influence of the applied static electric field and thus show the magnetoelectric behavior. We study theoretically two mechanisms proposed to describe this phenomenon. First one is based upon the inhomogeneous magnetoelectric interaction and the second one relies on the change of magnetic anisotropy parameters caused by electric field. We show that neither mechanism can be excluded by the general qualitative arguments.