Figure 1: Magnetization curve with H along a [110] direction for an Fe-Cr-Fe sandwich with a 13Å Cr layer. The data is indicated by solid lines, while the calculated curve produced from Eqns. 1 and 2 is indicated by the solid dots. The calculation employed the parameters K1/M = 0.25 kOe, Ku/M = 0.005 kOe, and J/M = 0.125 kOe.[5,7] The solid-headed arrows indicate the orientation of the moments of the two Fe films at a given applied field.