Fig. 4
Magnetization rotation with ferroelectric switching. XMCD-PEEM vector maps of Co local magnetization for BiFeO3 polarization switching from the a down to b up and back to c down state consecutively. Arrows in the vector maps give the local magnetization directions and the polar plots show the angular distribution of the Co magnetization. The domain boundaries are indicated by the white lines. Scale bar, 1 μm.The polar plots indicate an average Co magnetization rotation of nearly 90° from the d down state to e up state and then back to the f down state. The transparent parts in e, f are polar plots from d, e, respectively, to show the population distribution from previous state. No magnetic field is applied at any time during the measurements. The vector maps were taken at 120 K
