Structural evolution of Pd-79 cluster before melting

The melting of Pd-79 has been studied by molecular dynamics simulation method. It is found that Pd-79 cluster shows abnormal structural evolution before melting, i.e., the structure evolves alternately amongst ideal FCC, FCC with some surface point defects and amorphous when the temperature ranges from 581 K to 641 K. Considering the structural sensitivity to temperature, the Pd-79 cluster may be applied in thermally sensitive devices.