Manganese Distribution in CdMnTeSe Crystals. EXAFS Data Analysis
A. Kisiel, J. Łażewski , M. Zimnal-Starnawska
Institute of Physics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

E. Burattini
Laboratori Nazionali di Frascati, INFN, via E. Fermi 40, 00 044 Frascati, Italy

and A. Mycielski
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, 02-668 Warszawa, Poland
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The extended X-ray absorption fine structure (EXAFS) technique has been used to investigate the first shell coordination in zinc-blende quaternary Cd1-xMnxTe1-ySey (0.0 ≤ x ≤ 0.15; 0.0 ≤ y ≤ 0.20) alloys. The experimental data have been collected with the use of synchrotron radiation. All the nearest-neighbour distances have been found as linearly dependent on Se and Mn concentration. For each composition a consistent deviation from full random distribution of Mn atoms around Se and Te atoms was observed. Possible reasons of preferential Mn-Se over Mn-Te pairing were discussed.
DOI: 10.12693/APhysPolA.90.1032
PACS numbers: 61.10.-i, 61.72.Vv, 75.50.Pp