MOKE micsroscopy - new results

Magnetization reversal of Fe/MgO/Fe trilayer seen by MOKE microscopy. Wedge-shaped MgO spacer thickness ranges from 1.5Å to 6Å. The arrow indicates the direction of the spacer thickness increase. The solid line separates two regions of the sample: above the line Fe/MgO/Fe trilayer was grown directly on polished MgO(001) substrate while below the line the trilayer was deposited on the Mgo substrate precoated by the epitaxial MgO buffer. External magnetic field was applied along Fe(001) easy magnetization axis (sample diagonal) and its magnitude changes from -1200Oe to 1200Oe.