Abstract
AbstractUsing a method based on the kinetic tight binding Ising model (KTBIM), the segregation energy on the (111) face of a CuAg 0.45 at% alloy, is derived as a function of surface coverage, from segregation kinetics measured at 763 K. Nearly the same segregation energy value as from equilibrium experiments is obtained. Besides, it is shown that a surface size effect term, proportional to the square of the surface concentration, has to be introduced in the segregation energy, in order to take into account the surface strain energy which occurs in the first layer when the silver atoms segregate at the surface.
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