Figure 1
Credit: Adapted from A. Berger et al. [14]

Figure 1: (a) Magnetization hysteresis loops of a Co(4 Å)/Pt(7 Å) multilayer with eight repeats. The heavy line represents the major loop, while the multiple light lines represent the minor loops acquired between ±290 Oe. (b) Kerr microscopy images (150×150 μm) of a Co(4 Å)/Pt(7 Å) multilayer with eight repeats, during four successive field cycles. The images were acquired in the negative remnant state.