Article, Structural Evolution and Amorphization Kinetics of Copper Nanorods Under Thermal Annealing: A Molecular Dynamics Insight
Structural Evolution and Amorphization Kinetics of Copper Nanorods Under Thermal Annealing: A Molecular Dynamics Insight
DOI:
https://doi.org/10.65273/9g3spt91Keywords:
Copper nanorods, Molecular dynamics simulation, Structural evolution, Amorphization kineticsAbstract
This study employs molecular dynamics (MD) simulations to investigate the effects of temperature (600, 650, and 700 K) and annealing time (0-32 ps) on the atomic structure of copper nanorods. The embedded atom method (EAM) potential is used to model interatomic interactions under NPT conditions. Structural evolution is characterized using radial distribution function (RDF), coordination number, common neighbor analysis (CNA), and total energy. Results reveal that increasing temperature induces structural disorder, with a gradual transformation from a highly ordered Face-Centered Cubic (FCC) lattice to a partially amorphous state. Conversely, prolonged annealing promotes atomic rearrangement and recrystallization, stabilizing the structure. At 650 K and ~28 ps, the system achieves optimal stability with the lowest energy and highest FCC fraction. These findings provide atomistic insights into thermal treatment optimization of copper-based materials and contribute to the understanding of thermally induced structural evolution in metallic systems.
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