Abstract
We report a study of magnetic, electronic and structural properties of free standing Fe x Co y Ni z clusters with x + y + z = 7 using density functional theory. We analyze the dependence of the structural phase diagram, the local magnetic moments and the geometrical properties of these ternary clusters as a function of the concentration in the whole concentration range. We also introduce and test an alternative definition of the chemical order based on bond order descriptors. A reactivity and stability study is performed by computing electronic properties such as the (vertical) ionization potential, electron affinity, electronegativity and band gap. Calculation of condensed Fukui indexes using 3D-space analysis atomic definitions is carried out in order to predict the most favorable adsorption sites toward electron donor species.
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Acknowledgments
JR and PS are grateful to the Research Executive Agency of the European Research Council for financial support through the PIRSES-GA-2009-247671 project of the FP7-PEOPLE-2009-IRSES program. PS acknowledges financial help by the Spanish MICINN Project No. CTQ2011-23441/BQU. FA-G acknowledges financial support from PROMEP-SEP-CA230, CONACyT 162351 and Ministerio de Educación, Cultura y Deporte, Ref. SAB2011-0024, Spain. GG-R acknowledges the CONACyT postdoctoral fellowship (proyecto 138455).
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Guzmán-Ramírez, G., Salvador, P., Robles, J. et al. Density functional study of ternary Fe x Co y Ni z (x + y + z = 7) clusters. Theor Chem Acc 132, 1318 (2013). https://doi.org/10.1007/s00214-012-1318-4
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DOI: https://doi.org/10.1007/s00214-012-1318-4