Figure 2: Low-temperature magnetic phase diagram of the multilayer Rh/Pd/2Fe/2Ir.
From: Engineering skyrmions in transition-metal multilayers for spintronics

The total energy of the FM state (green line) and of the skyrmion lattice (SkX, red line) is shown with respect to the spin spiral (SS) state (dashed black line). The regimes of the SS, SkX and FM phase are indicated by blue, red and green colour, respectively. The multilayer structure is shown in the inset.