Magneto-optic Kerr effect of domain walls in ferromagnetic double-layered films

摘要

Abstract: The influence of domain walls on magneto﹐ptic effect of the double﹍ayered films is investigated. A method to cut the domain walls into a set of parallel thin﹍imit layers is introduced.Thus, the problems of light reflected by and transmitting through the domain walls are equivalent to those by thin﹍imit multilayer systems. The equation of Kerr rotation angle induced by domain walls is deduced. It is found that the Kerr rotation angle depends on the thickness of domain walls in the double﹍ayered films. !14