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Structure determination of (Fe3O4)+n(n=13) clusters via DFT

    https://doi.org/10.1142/S0217984916502390Cited by:18 (Source: Crossref)

    In virtue of the particle swarm optimization (PSO) algorithm, the global minimum candidate structures with the lowest energy for (Fe3O4)n(n=13) clusters were obtained by first-principles structural searches. The geometric structures and spin configurations of three cationic (Fe3O4)+n(n=13) clusters have been identified for the first time by comparing the experimental IR spectra with the calculated results from density functional theory by using different exchange-correlation functionals. It is found that the lowest energy structures of these clusters are of a shape of hat, boat and tower, respectively, with a ferrimagnetic arrangement of spins, and M06L functional is more suitable for Fe3O4 clusters than other ones.