The effects of deposition time on surface morphology, structural, electrical and optical properties of sputtered Ag-Cu thin filmsAzin Ahmadpourian, Carlos Luna, Arash Boochani, Ali Arman, Amine Achour, Sahare Rezaee and Sirvan NaderiEur. Phys. J. Plus, 131 10 (2016) 381DOI: https://doi.org/10.1140/epjp/i2016-16381-2