Magnetic states and magnetization reversal in magnetostatically coupled multilayers with low perpendicular anisotropy

Multilayers of [(F/NF).sub.N] composition, where F is a ferromagnetic layers, NF is a nonferromagnetic one and N the number of repetitions, are analyzed theoretically for different magnetic anisotropy characterized by the quality factor Q. The studies have shown that a [(F/NF}.sub.N] multilayer is a soft magnetic system in which the domain size is changed by a few orders of magnitude by small variations of Q, N, and the NF spacer thickness.