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

Ruqian Wu, Arthur J Freeman

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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
Issue number1-2
Publication statusPublished - 1994


ASJC Scopus subject areas

  • Condensed Matter Physics

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