Magnetization reversal of patterned magnetic structures consisting of single and antiferromagnetically (AF) coupled magnetic elements was simulated by Landau-Lifshitz-Gilbert equations. It is considered that AF coupled magnetic elements can make the demagnetization field small. Simulation was carried out for changing saturation magnetization, uniaxial anisotropy, magnetic exchange stiffness constant, interlayer exchange coupling, magnetic layer thickness, nonmagnetic layer thickness and element size. As a result, we found that the switching field of AF coupled magnetic elements became smaller than that of single magnetic elements in submicron elements.
