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First-Principles Studies of the Magnetic Properties of hcp Cr in Cr/Cu(111) and Cr/Ru(0001) Superlattices

Published online by Cambridge University Press:  01 February 2011

G. Y. Guo
G. Y. Guo*
Affiliation:
Department of Physics, National Taiwan University, Taipei 106, Taiwan
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Abstract

Latest first-principles density functional theoretical calculations using the generalized gradient approximation and highly accurate all-eleectron full-potential linearized augmented plane wave method, show that bulk hcp Cr would be a paramagnet and that no ferromagnetic state could be stabilized over a wide range of volume [1]. To understand the recent observation of the weakly ferromagnetic state of Cr in hcp Cr/Ru (0001) superlattices [2], the same theoretical calculations have been carried out for the hcp Cr3/Ru7 (0001) and hcp Cr3/fcc Cu6 (111) superlattices. The Cr/Ru superlattice is found to be ferromagnetic with a small magnetic moment of ∼0.31μB/Cr while in contrast, Cr/Cu superlattice is found to be nonmagnetic.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 721: Symposia E/J – Texture and Microstructure in Electronic and Magnetic Films – Nanostructural Magnetic Materials for Data Storage , 2002 , E7.7
Copyright
Copyright © Materials Research Society 2002

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