Thickness dependent rare earth segregation in magnetron deposited NdCo thin films studied by Xray reflectivity and Hard Xray photoemission
This study reveals that thickness-dependent neodymium segregation at the surface of magnetron-sputtered NdCo thin films, driven by strain relief from volume mismatch, creates the asymmetric atomic environments necessary for the transition from in-plane to out-of-plane magnetic anisotropy.