LOCAL MAGNETIC MOMENTS OFFe1/CrNNANOINCLUSIONS EMBEDDED IN BULK Fe

J. L. Morán-López (), P. G. Alvarado-Leyva () and J. M. Montejano-Carrizales ()
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J. L. Morán-López: Instituto Potosino de Investigación Científica y Tecnológica, Apdo. Postal 3-74 Tangamanga San Luis Potosí, San Luis Potosí, 78231, Mexico
P. G. Alvarado-Leyva: Facultad de Ciencias, Universidad Autónoma de San Luis Potosí, Alvaro Obregon 64 San Luis Potosí, San Luis Potosí, 78000, Mexico
J. M. Montejano-Carrizales: Instituto de Física, Universidad Autónoma de San Luis Potosí, Alvaro Obregon 64 San Luis Potosí, San Luis Potosí, 78000, Mexico

Surface Review and Letters (SRL), 2002, vol. 09, issue 05n06, 1747-1752

Abstract: Local magnetic moments ofFe1/CrNinclusions in an Fe matrix are calculated as a function of the Cr number of atomsNat zero temperature, and forN ≤ 64. We use a realisticspd-band Hamiltonian to determine their magnetic properties. The local magnetic momentsμ(i)at the various cluster sitesiare calculated self-consistently in the unrestricted Hartree–Fock approximation. The matrix Fe atoms couple always antiferromagnetically with the Cr atoms. Theμ(i)of Cr atoms at the interface are enhanced by the presence of Fe atoms in their first nearest neighbor shell. In most cases the Fe moments close to the cluster are reduced. A remarkable interplay between the antiferromagnetism of Cr and the ferromagnetism of Fe is obtained.

Date: 2002
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DOI: 10.1142/S0218625X02004335

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