Surface and interface magnetic effects in CoNRhM clusters Conference Paper

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Overview

abstract

• The spin moments, orbital moments, and magnetic anisotropy energy (MAE) of CoNRhM clusters having N ≤ 321 atoms are investigated in the framework of a self-consistent electronic model Hamiltonian. Alloying Co clusters with Rh results in a significant enhancement of the magnetization per Co atom. This is mainly due to the spin moments (〈Siz〉) induced at the Rh atoms, which amount to about 20%25 of the moment per Co atom (〈Siz〉 = (0.2-0.3)μB), and to an enhancement of the orbital moments of the Co atoms at the Co-Rh interfaces. The calculated MAEs reveal remarkable changes in the easy axis as a function of concentration. The magnetic properties are analyzed from a local perspective. The role of the chemical arrangement of Co and Rh atoms within the cluster is discussed. © 2005 Elsevier B.V. All rights reserved.

authors

• Dorantes Dávila Jesús Gerardo
• Muñoz-Navia M.
• Pastor G.M.
• Villaseñor-González P.

publication date

• 2006-01-01

funding provided via

• Consejo Nacional de Ciencia y Tecnología, CONACYT: 39517  Grant
• European Commission, EC: G5RD-CT-2001-00478  Grant
• FIES-98-101-I  Grant

published in

• Computational Materials Science  Journal

Research

keywords

• Binary clusters; Magnetic anisotropy; Spin and orbital magnetism Hamiltonians; Magnetic anisotropy; Magnetism; Magnetization; Binary clusters; Electronic model; Magnetic effects; Cobalt compounds

Identity

Digital Object Identifier (DOI)

• 10.1016/j.commatsci.2004.08.015

Additional Document Info

start page

• 302

end page

• 306

volume

• 35

issue

• 3