Fig. 3
From: Magnetic Hysteresis in Nanostructures with Thermally Controlled RKKY Coupling
a Measured M(H) curves for a sample from series, Fe/sp1(x = 15%)/Fe, for different temperatures. b Corresponding simulated M(H) curves for model F1/NM/F2 trilayer for different strengths of effective field HJ of indirect exchange coupling. (Haav = (Ha1 + Ha2)/2, where Ha1and Ha2 are anisotropy fields of layers F1 and F2. c M(H) curves simulated for selected angles φH, for HJ/Haav = 2. d Transformation of local minima of free energy (2) as a function of applied field H, for case HJ/Haav = 2 and φH = 15°. Blue lines trace the path connecting energy minima for different φm (φd). Front surface of energy surface is transparent for visual clarity of illustration