Ion beam mixing and superconductivity of multilayered Nb/Al films - Meng, X.; Ren, Y.; Cui, P.; Lin, M.; Sang, L. (Elsevier)
Multilayered Nb/Al films have been bombarded with Kr ions at various doses and their superconductivity has been studied. It is found that at a dose of 2 x 10^1^6ionscm^2, the Nb and Al layers have been sufficiently mixed and a Nb-Al alloy has formed. After annealing at 700 ^o C for 0.5 h, the ion beam mixed sample has an onset transition temperature of 13.9 K, while the unbombarded sample has a much lower onset T"c of 5.2 K.
http://linkinghub.elsevier.com/retrieve/pii/0168-583X(90)90655-E
Keywords: U