J. Phys. IV France 7 (1997) C2-1201-C2-1202
XANES Analysis of L3,2 Edges of Zinc Selenides with Transition MetalsM. Zimnal-Starnawska1, E. Czarnecka-Such1, A. Kisiel1, W. Frentrup2 and W. Giriat3
1 Institute of Physics, Jagellonian University, Reymonta 4, 30-059 Kraków, Poland
2 Humboldt-Universität zu Berlin, Institut für Physik, EES, Invalidenstr. 110, 10115 Berlin, Germany
3 Instituto Venezolano de Investigationes Cientificas, Centro de Fisica, Apartado 827, Caracas 1010A, Venezuela
X-ray Absorption Near Edge Structure (XANES) for ternary compounds Zn1-xTMxSe (TM=Cr, Mn, Fe, Co, and Ni) with different concentration x of transition metals (TM) has been studied with the use of synchrotron radiation. XANES measurements were carried out in the fluorescence detection mode using synchrotron radiation from the HE-PGM2 plane grating monochromator at BESSY. The L3.2 edges for Se, Zn and different transition metals (Cr, Mn, Fe, Co, and Ni) in Zn1-xTMxSe compounds have been analyzed. Moreover, the analysis of L3.2 edges for different transition metals in binary TMSe has also been made. The characteristic feature of L3.2 edges for transition metals containing two white lines was observed. The energy positions of these maxima are in good agreement with the theoretical results. The studies of L3.2 edges of Se in ternary compounds in comparison to the same edge of host crystal (ZnSe) allowed us to obtain information about the influence of additional 3d-states of TM on the density of states of ternary compounds.
© EDP Sciences 1997