Simulation of hysteresis phenomena in multilayer magnetic nanostructures

The Monte Carlo simulation of magnetic properties of artificial multilayer nanostructures in which ultrathin ferromagnetic films divided by layer of non-magnetic metal and coupled antiferromagnetically is realized. The anisotropic Heisenberg model is applied for description of magnetic properties. Dependence of hysteresis phenomena on thickness of ferromagnetic films and various values of interlayer exchange interaction is revealed. It is shown that horizontal sections appearing on the hysteresis loops are connected with magnetization flips of individual monolayers in ferromagnetic films. It is revealed that number of the hysteresis loops depends on interlayer interaction and temperature. (paper)