## Compositional patterning in immiscible alloys driven by irradiation

Ion-beam mixing of immiscible alloys is viewed as a competing dynamic process, where irradiation-induced mixing opposes thermal decomposition. The external perturbation drives the system away from equilibrium, and in the long-time regime the system can exhibit phase and microstructural modifications. Due to the nonequilibrium nature of the process, the steady state depends explicitly on the details of the interplay between irradiation and the internal kinetics of the alloy. In particular, we have recently developed a continuum model that takes into account the finite range of atomic relocations during collision cascades [R. A. Enrique and P. Bellon, Phys. Rev. Lett. 84,more »