Ferromagnet-superconductor nanocontacts grown by focused electron/ion beam techniques for current-in-plane Andreev Reflection measurements

► Ferromagnetic-superconductor nanocontacts created with focused electron/ion beams. ► The conductance curves can be fitted using BTK model including spin polarization. ► The spin polarization of the FEBID-Co nanodeposit obtained from fits is about 35%. ► The FIBID-W is a stable superconductor showing good BCS behaviour at the nanoscale.