PAC investigations on nanostructured materials

Abstract

Because of its high local sensitivity the perturbed angular correlation spectroscopy (PAC) is well suited to study the local environment of radioactive probe atoms. In this way, the behaviour of probe atoms at interfaces, the influence of different preparation conditions on the formation of defect complexes, and the incorporation of impurity atoms is investigated whereby the probe atoms form either a constituent of the matrix or act as dopant atoms. First results of nanocrystalline WGa and CdS doped with the radioactive probe 111In are presented.