Nanocrystalline metals and oxides II: Reverse microemulsions

In this contribution the synthesis of nanocrystalline metal oxides and the formation of NH₄MnF₃ by microemulsion techniques is investigated in detail. The size and size distribution of the primary reverse micelles are determined by dynamic light scattering. Further it was possible to characterize intermediate species in the reaction process. The size of the final nanocrystal material was evaluated from the line broadening of X-ray reflections. The size distribution is very narrow and for the metaloxides a strong correlation exists between the size of the final product and the reverse micelles.