EXAFS Determination of Bond Lengths in Zn1−x MnxSe

Abstract

AbstractEXAFS has been used to determine bond lengths in the diluted magnetic semiconductor Zn1−xMnxSe. These alloys change from a cubic (zincblende) crystal structure to a hexagonal (wurtzite) structure as a function of composition, with the transition at x ≈ 0.3. Although x-ray diffraction measurements show the lattice parameter to change by approximately 0.2Å through the series and the crystal structure changes from cubic to hexagonal, the nearestneighbor bond distances show no change within the experimental uncertainty of 0.0Å.