Magnetic properties of bimetallic Ni–Pd nanoclusters

JAVIER GUEVARA; ANA MARIA LLOIS; F. AGUILERA-GRANJA; J.M. MONTEJANO-CARRIZALES

PHYSICA B - CONDENSED MATTER

Año: 2004 vol. 354 p. 300 - 302

0921-4526

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.