>Magister Scientiae - MSc / Insight into the effects of isothermal and non-isothermal annealing on bi-metallic thin film is important for material synthesis and application in everyday use. The effects of isothermal annealing on bi-metallic thin films has long been studied using various heating methods from a resistively heated filaments, by transferring heat via conduction, convection and irradiation. The effect of each method have been widely reported in literature. The diffusion coefficient and activation energies of the constituent atoms can calculated for each annealing method. On the other hand, the effects of non-isothermal annealing on bi-metallic thin films has not been comprehensively studied, and there are areas of this annealing regime that need further investigation. In this study a femtosecond laser with a 1064 nm central wavelength was used to anneal bi-metallic thin films of Zinc-Tin (Zn-Sn) on a substrate.