Magnetic Properties of Iron Ultrathin Films Intercalated in Graphene/Ni(111)

抄録

We measured element specific magnetization curves for graphene/Fe/Ni(111) with a intercalated monolayer of Fe, obtained from external magnetic field dependence of X-ray absorption at Fe and Ni L₃ edges. In-plane magnetic anisotropy was clearly confirmed in both Fe and Ni magnetic sites and the strong ferromagnetic coupling of the Fe spins with the Ni spins were found at the interface. A detailed analysis of X-ray magnetic circular dichroism (XMCD) spectra leads to significant values of in-plane and out-of-plane orbital magnetic moment at the Fe site, whose anisotropy is vanishingly small. [DOI: 10.1380/ejssnt.2015.312]