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"Magnetic properties of bimetallic Ni-Pd nanoclusters"
J. Guevara, A.M. Llois, F. Aguilera-Granja and J.M. Montejano-Carrizales
Proc. of the Workshop "At the Frontiers of Condensed Matter II - Magnetism, Magnetic Materials, and their Applications", Buenos Aires, Argentina, June 22-26, 2004. Ed. C. Saragovi, J. Guevara, R. Weht, A.M. Llois and M.T. Causa
Physica B Condens. Matter. 354(1-4) (2004) 300-302
We study the dependence of the magnetic properties of Ni-Pd nanoclusters (Ni cores coated by Pd atoms) on size and relative composition. We consider Ni-Pd clusters as having closed shell cubo-octahedral structure with an increasing Ni core size. The electronic and magnetic properties are calculated with a parametrized Hubbard Hamiltonian within the unrestricted Hartree-Fock approximation. We show that, depending on the relative composition, the Pd coating can give rise to an enhancement of the average magnetic moment of the Ni core.
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