4:15 PM - 4:30 PM
▲ [19p-D104-12] Perpendicular magnetic anisotropy in as-dposited La/CoFeB/MgO layered structures.
Keywords:Perpendicular magnetic anisotropy, Orbital magnetic moment, Electronegativity
It is well known that perpendicular magnetic anisotropy (PMA) is increased by post-annealing at the CoFeB/MgO interface. On the other hand, interface PMA can also be observed even for the as-deposited CoFeB/MgO layered structures, depending on the underlayer materials. In this study, we investigated PMA in as-deposited La/CoFeB/MgO, La/CoFeB/La, MgO/CoFeB/MgO layered structures by a vibrating sample magnetometer. To further investigate the correlation between PMA and orbital magnetic moments, x-ray magnetic circular dichroism was measured for Fe-L2,3 and La-M4,5 edges.