Magnetism at metal-ceramic interfaces

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

Ruqian Wu, Arthur J Freeman

Research output: Contribution to journalArticle

4 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)127-133
Number of pages7
JournalJournal of Magnetism and Magnetic Materials
Volume137
Issue number1-2
DOIs
Publication statusPublished - 1994

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Cermets
Dichroism
Magnetism
Magnetic moments
Electronic properties
Transition metals
Monolayers
Magnetic properties
ceramics
magnetic properties
moments
Oxidation
Substrates
metals
dichroism
plane waves
magnetic moments
transition metals
orbitals
oxidation

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

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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.",
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