@article{oai:repo.qst.go.jp:00048920, author = {渡邉, 貴弘 and Yamada, Y. and Koide, A. and 圓谷, 志郎 and 李, 松田 and I., Popov Z. and B., Sorokin P. and 楢本, 洋 and Sasaki, M. and Amemiya, K. and 境, 誠司 and 渡邉 貴弘 and 圓谷 志郎 and 李 松田 and パベル ソロキン and 楢本 洋 and 境 誠司}, issue = {2}, journal = {Applied Physics Letters}, month = {May}, note = {Ferromagnetism with perpendicular magnetic anisotropy (PMA) was observed at room temperature in cobalt nanoparticles (NPs) grown on hexagonal boron nitride (h-BN) on a Pt(111) surface. It was shown that the Co NPs have planar hexagonal shapes with a mean diameter of ∼20 nm and a mean height of ∼1.6 nm. The depth-resolved analysis of X-ray magnetic circular dichroism at the Co L2,3-edges revealed that in the ferromagnetic Co NPs, the ratio of the orbital magnetic moment to the spin magnetic moment in the out-of-plane direction becomes larger at the Co NP/h-BN interface than the ratio in bulk Co. The B and N K-edge near edge X-ray absorption fine structures showed the orbital hybridization between the π orbitals of h-BN and d orbitals of Co at the interface, as an origin of the orbital magnetic moment enhancement possibly giving rise to PMA in the Co NPs.}, pages = {022407-1--022407-5}, title = {Interface-induced perpendicular magnetic anisotropy of Co nanoparticles on single-layer h-BN/Pt(111)}, volume = {112}, year = {2018} }