2003•Journal of Applied PhysicsRequires access

First principles determinations of magnetic anisotropy energy of Co nanoclusters

Jisang Hong, Ruqian Wu

Abstract

We have calculated magnetic anisotropy energies of several free standing Co nanoclusters consisting of one, two, three, and six Co atoms with the full potential linearized augmented plane wave method. The magnetic moments are found to be aligned perpendicular to the Co–Co bond. The results show that the spin magnetic moments are suppressed by roughly 10% compared to Co monolayer or Co nanowire. Orbital magnetic moments and anisotropy energies depend sensitively on the size and shape of clusters.

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Key concepts: Magnetic moment, Nanoclusters, Magnetic anisotropy, Condensed matter physics, Anisotropy energy, Anisotropy, Materials science, Monolayer