MAGNETIC-PROPERTIES OF SINGLE-CRYSTAL RARE-EARTH GD-Y SUPERLATTICES

[[abstract]]The first coherent single crystal rare earth superlattices of GdnYm were grown by metal molecular beam epitaxy. The magnetic results based on magnetization measurements are consistent with a model in which the central Gd region in each array behaves like an ideal ferromagnetic thin film even for n as small as 5. The two interfacial Gd layers at the sides appear not to order ferromagnetically at low temperatures and have a susceptibility independent of n. The temperature dependence of the magnetic moment of the isolated Gd arrays (3⩽n⩽21) is similar to the behavior seen in bulk Gd with reduced Curie temperatures[[fileno]]2010113010040[[department]]物理