Ammonium Nitrate Melt Technique for the Synthesis of Oxide Compounds

In this study, we propose a wet chemical method, called ammonium-nitrate-melt-technique, for the synthesis of any type of bulk oxide compounds. This method was successfully applied to the high-T-c superconductors (Y-123, Ru-2212, etc), diluted magnetic semiconductors (Ti1-xCoO2) and hard magnetic barium ferrites (BaFe12O19). For instance, we have obtained a single phase M-type barium ferrites with finely granular structure at nanoscale (300-400 nm). Magnetic parameters of these samples are near to the theoretically estimated values. Besides, superconducting transition temperature of similar to 70 K was observed in ferromagnetism&superconductivity co-existed ruthenates, which is only possible at very high oxygination pressures (600 atm). Consequently, we believe that the method will attract the attention of many material scientists..