Abstract
Magnetic properties and the magneto-optical Kerr effect were investigated in the multilayered amorphous GdCo/TbFe and GdTbCoFe/TbFe films prepared by R.F. sputtering. As a result, the following have been clarified: In the case of the multi-layered films in which the magnetic moments of TM atoms between two films arrange oppositely with each other, anomalous magnetic Kerr rotation hysteresis loops are observed but they become normal loops with increasing film thickness of GdCo layer. On the other hand, in the multilayered films with parallel arrangement of TM atom moments, the behavior of hysteresis loops is analogous to the case of single layered film, moreover θk increases monotonically with the increasing film thickness of GdCo or GdTbCoFe layer.
