Ferromagnetic iron-chromium alloys

Research output: Contribution to journalArticle

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Abstract

The spin polarized discrete variational method in the local density approximation is used to calculate the electronic structure of 15-atom clusters representing Fe-Cr alloys. The Fe local moment at the central site is found to depend on the orientation (relative to that of Fe) of the Cr moment in the neighbouring shell. For parallel orientation, the Fe moment decreases with increasing number of Cr atoms while it increases slightly in the antiparallel case. The Cr moment dependence on Cr in the NN shell is also determined. These results are incorporated in an approximate relation leading to computation of average moments, and comparison to experimental data is made. It is concluded that there is ferromagnetic coupling between Fe and Cr in the Cr-rich region.

Original languageEnglish
Article number012
Pages (from-to)2089-2099
Number of pages11
JournalJournal of Physics: Condensed Matter
Volume3
Issue number13
DOIs
Publication statusPublished - 1991

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Chromium Alloys
chromium alloys
Chromium alloys
iron alloys
Iron alloys
moments
Local density approximation
Atoms
Electronic structure
atoms
electronic structure
approximation

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ferromagnetic iron-chromium alloys. / Elzain, M. E.

In: Journal of Physics: Condensed Matter, Vol. 3, No. 13, 012, 1991, p. 2089-2099.

Research output: Contribution to journalArticle

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AB - The spin polarized discrete variational method in the local density approximation is used to calculate the electronic structure of 15-atom clusters representing Fe-Cr alloys. The Fe local moment at the central site is found to depend on the orientation (relative to that of Fe) of the Cr moment in the neighbouring shell. For parallel orientation, the Fe moment decreases with increasing number of Cr atoms while it increases slightly in the antiparallel case. The Cr moment dependence on Cr in the NN shell is also determined. These results are incorporated in an approximate relation leading to computation of average moments, and comparison to experimental data is made. It is concluded that there is ferromagnetic coupling between Fe and Cr in the Cr-rich region.

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