Photoemission study ofCd1−xMnxF2with fluorite (x≤0.1) and rutile (x≥0.925) structures

The density-of-states distribution in the valence band and the nearest core levels was measured in an x-ray photoemission spectroscopy (XPS) experiment for a ${\mathrm{Cd}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Mn}}_{\mathrm{x}}$ ${\mathrm{F}}_2$ ternary crystal with fluorite (x≤0.1) and rutile (x≥0.925) structures. The XPS spectra have peaks at similar positions for both these structures. The chemical composition of the ternary alloy ${\mathrm{Cd}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Mn}}_{\mathrm{x}}$ ${\mathrm{F}}_2$ determines the heights of the peaks in the XPS spectra. The XPS spectra of ${\mathrm{Cd}}_{1\mathrm{-}\mathrm{x}}$ ${\mathrm{Mn}}_{\mathrm{x}}$ ${\mathrm{F}}_2$ crystals can be approximated by a superposition of the ${\mathrm{MnF}}_2$ and ${\mathrm{CdF}}_2$ spectra with relative contributions x and 1-x, respectively.