We have investigated the electronic structures of the valence bands of β’-AgMg (CsCl structure) and α’-${\mathrm{Ag}}_3$Mg (${\mathrm{DO}}_{23}$ structure) by a combination of ultraviolet and x-ray photoelectron spectroscopies and first-principles band-structure and photocurrent calculations. The overall agreement between the measurements and calculated results is good indicating that the one-electron approach provides a realistic description of the electronic structure in Ag-Mg ordered alloys. We also present results for the core-level shifts observed on alloying.

• Received 2 November 1993

DOI:https://doi.org/10.1103/PhysRevB.49.4478