Ultrasensitive Anomalous Hall Effect in Ta/CoFe/Oxide/Ta Multilayers

Figure 3

(a) -H curves for sample Ta(0.8)/Co₂₀Fe₈₀(0.8)/MgO(0.8)/Ta(1.0) (in nm) in the as-deposited and 240°C annealed states. (b) -H curves for sample Ta(0.8)/Co₂₀Fe₈₀(0.8)/HfO₂(0.8)/Ta(1.0) (in nm) in the as-deposited and 240°C annealed states.

(a)

(b)