Photoemission studies of Co- and Fe-based compounds with the ThMn₁₂ structure

Authors

A.S. Fernando, University of Nebraska - Lincoln
J.P. Woods, University of Nebraska - Lincoln
Sitaram Jaswal, University of NebraskaFollow
B.M. Patterson, University of Nebraska - Lincoln
D. Welipitiya, University of Nebraska - Lincoln
A.S. Nazareth, University of Nebraska - Lincoln
David J. Sellmyer, University of Nebraska-LincolnFollow

Document Type

Article

Date of this Version

May 1993

Comments

Published by American Institute of Physics. J. Applied Physics 73, 6919 (1993). ©1993 American Institute of Physics. Permission to use. http://jap.aip.org/jap/.

Abstract

The electronic structures of NdFe₁₁Ti, NdCo₁₀V₂, and YCo₁₀Cr₂ have been studied with photoemission and spin-polarized calculations. The changes in these electronic structures upon nitrogenation have also been investigated. In the Fe compound, the Fe 3d states dominate the calculated density of states near the Fermi-edge, and the N(2p) peak is evident at around 6.3 eV. There is no shift in Fe 3d peaks visible in these compounds upon nitrogenation. Other than small energy shifts in the peak positions, there is an overall agreement between experimental data and the calculated density of states. The calculated density of states in the local-density approximation for YCo₁₀V₂ is broadened to account for the well-known many-body effects and compared with the photoemission data. Journal of Applied Physics is copyrighted by The American Institute of Physics.