Cohesive energy effects on the atomic transport induced by ion beam mixing

Formation of Amorphous Alloys by Ion Beam Mixing and Its Multiscale Theoretical Modeling in the Equilibrium Immiscible Sc−W System

“…Nordlund et al have studied the IBM process across the Co/Cu and Ni/Cu interface by simulations and found that the difference in melting points of the constituent metals could lead to different re-crystallization rates, and the diffusion coefficient of the metal with a low melting point is higher than that of the metal with a high melting point during the relaxation period. According to the model proposed by Chang et al, the amount of atomic transport due to radiation-enhanced diffusion was determined by the magnitude of atomic radius, radiation damage density, and cohesive energy. Among these parameters, cohesive energy plays a dominant role in atomic transport, and atoms with small cohesive energy are more mobile than those with large cohesive energy.…”

Growing imbedded Ni3C-rich layer with sharp interfaces by means of ion beam mixing of C/Ni layers

“…The asymmetric mixing was explained by the lower melting point of Cu. Chang et al predict that the elements of lower cohesive energy are more mobile causing the asymmetric mixing [9].…”

“…Ion beam mixing is far from being an equilibrium process and thus it can overcome the problem above. Really, IBM is frequently applied to produce various nonequilibrium phases like amorphous alloys with negative or positive heat of mixing [1][2][3][4][5][6][7][8][9]. To explain these phenomena it is frequently argued that the fast quenching is responsible for the process.…”

“…The observed kinetics vary greatly too, the mass transport in limiting cases might be symmetric or asymmetric [8,9]. Applying focused ion beam (FIB) nano patterning of ion beam affected material is possible.…”