Magnetism at metal-ceramic interfaces: effects of a Au overlayer on the magnetic properties of Fe/MgO(001)

Ruqian Wu; A. J. Freeman

doi:10.1016/0304-8853(94)90197-X

Magnetism at metal-ceramic interfaces: effects of a Au overlayer on the magnetic properties of Fe/MgO(001)

Ruqian Wu, A. J. Freeman^*

^*Corresponding author for this work

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

In the search for a benign magnetic substrate with which to explore 2D magnetism in transition metal monolayer, MgO(001) has emerged from studies of the metal-ceramic interface as a prime candidate. Since Au overlayers are now used to prevent oxidation, we have determined their effects on the electronic and magnetic properties of Fe/MgO(001) by means of first principles calculations using the full potential linearized augmented plane wave method. Some Fe-Au hybridization is found which diminishes the giant spin moment in Fe/MgO(001) by 0.14μ_B. In turn, the Fe layer induces a sizable magnetic moment at the Au site, namely, a 0.069μ_B spin moment and a 0.042μ_B orbital moment. A substantial magnetic circular dichroism signal is predicted for Au, which invites experimental verification.

Original language	English (US)
Pages (from-to)	127-133
Number of pages	7
Journal	Journal of Magnetism and Magnetic Materials
Volume	137
Issue number	1-2
DOIs	https://doi.org/10.1016/0304-8853(94)90197-X
State	Published - Oct 1994

Funding

This work is supported by the Department of Energy under Contract DE-FG02-88-ER45372 and a computing grant from BES at the Lawrence

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/0304-8853(94)90197-X

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title = "Magnetism at metal-ceramic interfaces: effects of a Au overlayer on the magnetic properties of Fe/MgO(001)",

abstract = "In the search for a benign magnetic substrate with which to explore 2D magnetism in transition metal monolayer, MgO(001) has emerged from studies of the metal-ceramic interface as a prime candidate. Since Au overlayers are now used to prevent oxidation, we have determined their effects on the electronic and magnetic properties of Fe/MgO(001) by means of first principles calculations using the full potential linearized augmented plane wave method. Some Fe-Au hybridization is found which diminishes the giant spin moment in Fe/MgO(001) by 0.14μB. In turn, the Fe layer induces a sizable magnetic moment at the Au site, namely, a 0.069μB spin moment and a 0.042μB orbital moment. A substantial magnetic circular dichroism signal is predicted for Au, which invites experimental verification.",

author = "Ruqian Wu and Freeman, {A. J.}",

note = "Funding Information: This work is supported by the Department of Energy under Contract DE-FG02-88-ER45372 and a computing grant from BES at the Lawrence",

year = "1994",

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T2 - effects of a Au overlayer on the magnetic properties of Fe/MgO(001)

AU - Wu, Ruqian

AU - Freeman, A. J.

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PY - 1994/10

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AB - In the search for a benign magnetic substrate with which to explore 2D magnetism in transition metal monolayer, MgO(001) has emerged from studies of the metal-ceramic interface as a prime candidate. Since Au overlayers are now used to prevent oxidation, we have determined their effects on the electronic and magnetic properties of Fe/MgO(001) by means of first principles calculations using the full potential linearized augmented plane wave method. Some Fe-Au hybridization is found which diminishes the giant spin moment in Fe/MgO(001) by 0.14μB. In turn, the Fe layer induces a sizable magnetic moment at the Au site, namely, a 0.069μB spin moment and a 0.042μB orbital moment. A substantial magnetic circular dichroism signal is predicted for Au, which invites experimental verification.

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Magnetism at metal-ceramic interfaces: effects of a Au overlayer on the magnetic properties of Fe/MgO(001)

Abstract

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ASJC Scopus subject areas

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