The theoretical description of the Fulde–Ferrell–Larkin–Ovchinnikov like state establishingin nanostructured bilayers of ferromagnetic (F) and superconducting (S) material leads tocritical temperature oscillations and reentrant superconductivity as the F layer thicknessgradually increases. The experimental realization of these phenomena is an importantprerequisite for the fabrication of the ferromagnet/superconductor/ferromagnet corestructure of the superconducting spin-valve. A switching of the spin-valve is only expectedif such non-monotonic critical temperature behavior is observed in F/S bilayers as well asin the S/F bilayers, a combination of which the spin-valve core structure can be regarded toconsist of. In our former investigations we could demonstrate the required non-monotonicbehavior of the critical temperature in S/F bilayers. In this study we succeeded in thepreparation of F/S bilayers, where the superconducting material is now grown on topof the ferromagnetic metal, which shows deep critical temperature oscillationsas a function of the ferromagnetic layer thickness as well as an extinction andrecovery, i.e. a reentrant behavior, of superconductivity. In particular, the latter isnecessary to obtain a spin-valve with a large critical temperature shift betweenthe parallel and antiparallel configurations of magnetizations in the F layers.