Abstract
Structural changes upon freezing of a molten Cu 555 cluster have been studied using two different cooling ways by employing molecular-dynamics simulation. The simulation results show that the final structures and local structural change processes of the molten Cu 555 present different patterns in two cooling ways. When the Cu 555 cluster is quenched to T=400 K, the final structure is based on an icosahedral geometry. In the second cooling way from T=1100 to 400 K at a decrement of 100 K, the final crystallization structure is mainly based on a faced center cubic (FCC) structure.
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