Self-consistent embedded-cluster model for magnetic impurities: Fe, Co, and Ni in β′ - N

D. E. Ellis*, G. A. Benesh, E. Byrom

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

Substitutional transition-metal impurities occupying either Ni or Al sites in the intermetallic compound β′-NiAl with CsCl structure have been treated by a self-consistent molecular-orbital method. The electronic energy levels and charge and spin densities of MX8 clusters representing a central atom and its nearest neighbors and MX8Y6 clusters representing central, nearest-neighbor and second-nearest-neighbor atoms have been calculated in the Hartree-Fock-Slater spin-polarized model, using a numerical discrete variational method. Interaction of the impurity cluster with the crystal environment is represented by a pseudopotential derived from cluster calculations on the pure compound. Results for Fe, Ni, and Co impurities in β′-NiAl are discussed in connection with experimental resistivity, Mössbauer isomer shift, and NMR data.

Original languageEnglish (US)
Pages (from-to)1198-1207
Number of pages10
JournalPhysical Review B
Volume20
Issue number3
DOIs
StatePublished - 1979

ASJC Scopus subject areas

  • Condensed Matter Physics

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