Thermomagnetic Data Writing and Erasing in DyCo/NiFe (TbFe/NiFe) Film Structures

摘要

A new principle of data writing and erasing is proposed based on the exchange coupling between magnetic layers with mutually orthogonal orientations of the effective magnetization. The new method provides for a significant decrease in energy consumption. The possibility of using bilayer magnetic films of the (rare earth metal-transition metal)/NiFe type possessing unidirectional anisotropy as the media for thermo-magnetic writing and erasing of magnetooptical data is studied.