Abstract
The impact of heavy-ion irradiation on the morphology of bilayers, which are composed of two immiscible metals, is investigated with the help of experiments and molecular-dynamics computer simulations. Using the model system Ag∕Ni, our main focus lies on the interface roughness of the Ag∕Ni phase boundary and its evolution in the course of ion bombardment. The mechanism which underlies these structural changes is identified as radiation-induced viscous flow—in combination with thermodynamic driving forces due to interface stress.
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