Abstract
The Sutton–Chen potential was used to simulate the process of solidification of Ni nanoparticles at temperatures ranging from 1000 to 100 K in the cooling process. The number of atoms per particle ranged from 500 to 4000. The results show an expected increase in solidification temperature with size. Analysis of the first-neighbour interatomic distance as a function of temperature showed exponential behaviour up to the phase transition. A reduction in the interatomic distance was observed at small sizes below the established lattice parameter. Characterization of the surface as a function of the number of first neighbours allowed interpretation and quantification of the surface planes as a function of particle size at low temperatures.
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Agudelo-Giraldo, J.D., Arias-Mateus, D.F., Gomez-Hermida, M.M. et al. Structural analysis of Ni nanoparticles in thermal cooling by molecular dynamics. Bull Mater Sci 46, 203 (2023). https://doi.org/10.1007/s12034-023-03037-8
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DOI: https://doi.org/10.1007/s12034-023-03037-8