Spectroscopic studies of high-temperature processes in oxides

Spectroscopic studies can provide important information on physico-chemical processes in solids, like, e.g., order-disorder processes, the point defect structure and local defect arrangements, and heterogeneous as well as homogeneous chemical reactions of solids. Results will be reported relating to these topics from experiments that have been performed under in situ conditions, i.e. at high temperatures and under defined conditions of oxygen partial pressures. The examples have been chosen from high-temperature studies using optical spectroscopy and Mossbauer spectroscopy.