Temperature role in variations of Ni cluster structure

The gas-phase condensation of nickel nanoclusters is simulated by the molecular dynamics method. It is revealed that subsequent heating of the synthesized clusters to temperatures of 400-500 K leads to a substantial improvement of their internal structure with a hexagonal close-packed phase predominating. Upon heating the nanoparticles above the melting point and subsequent gradual cooling, the formation of a cluster structure depends strongly on the cooling rate. The inference is made that heating of the nanoclusters synthesized from a gas phase can be used for the controlled formation of nickel nanoparticles with a predicted structure