EXAFS STUDIES OF LOCAL ATOMIC-STRUCTURE IN ZN1-XMNXS

Complex studies of local atomic structure in the wurzite-type Zn1-xMnx S (x = 0.12-0.33) diluted magnetic semiconductors have been performed with use of the EXAFS technique. These investigations included the K-e dge EXAFS measurements for both cation (Zn, Mn) and anion (S) constitu ent elements, supplemented by X-ray diffraction measurements carried o ut for the same crystals. Detailed analysis of the obtained data for d ifferent crystal compositions gave convincing evidence for a bimodal d istribution of the nearest-neighbour interatomic distances in Zn1-xMnx S alloys within the manganese solubility range.