ISSN:
1572-9540
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract The hyperfine fields of Fe and Co in the substitutionally disorderedbcc alloy system Fe x Co1−x due to the Fermi contact interaction have been studied by means of charge self-consistent cluster Korringa-Kohn-Rostoker-Coherent Potential Approximation- (KKR-CPA) band structure calculations. The contribution to the Fermi contact hyperfine field due to core polarisation was found to be proportional to the local moment for Fe as well as for Co throughout the concentration range. On the other hand, the contributions of the conduction band did not show such a simple behavior, but were found to be dominated by the population of the s-bands for spin up and down. These findings are completely analogous to those obtained in a recent study of the ferromagnetic alloy systems Fe x Ni1−x and Fe x Cr1−x . To investigate the importance of relativistic effects on the Fermi contact hyperfine fields, the corresponding hyperfine matrix elements have been calculated nonrelativistically as well as fully relativistically. The results of the present work are compared with experiment as well as to theoretical data on related alloy systems.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF02407803
