Size evolution of structures and energetics of iron clusters (Fe n, n ≤ 36): Molecular dynamics studies using a Lennard–Jones type potential

Abstract

Stable structures and energetics of iron clusters, Fe n ( n up to 36), have been investigated by performing molecular dynamics simulations. A Lennard–Jones type pair-potential energy function recently proposed for iron crystal studies [Mohri et al., J. Alloys Compd. 317 (2001) 13] has been used to describe the particle interactions in the simulations. The growing pattern of iron clusters is analyzed via rearrangement collision. The general trends in this pattern are discussed by comparing with recent quantum calculations. Finally, a preferable growth mechanism for Fe n clusters is determined.