Calculated magnetization of iron-cobalt disordered alloys

R. H. Victora, L. M. Falicov

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Abstract

The spin polarization of the disordered Fe-Co alloy was calculated using a tight-binding scheme, with single-site, full-orbital interactions treated self-consistently. Disorder is introduced by the use of the virtual-crystal approximation. Excellent agreement with the experimental spin polarization is obtained and the unusual shape of the Fe-Co curve on the Slater-Pauling plot is explained. The magnetization of the Co-rich alloys essentially depends on the number of available d holes, while the magnetization of the Fe-rich alloys is influenced by a relatively weak electron-electron interaction. The intersection of the two effects occurs at approximately 30 at.% Co and produces a maximum.

Original languageEnglish (US)
Pages (from-to)259-262
Number of pages4
JournalPhysical Review B
Volume30
Issue number1
DOIs
StatePublished - 1984

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