The structure around Ti4+ in BaO-SiO2-B2O3-TiO2 had been studied by X-ray fluorescence spectra. The results show that the Ti4+ mainly exists in the [TiO4] and ent
A new niobate Sr6FeNb9O30 was synthesized in the tary system SrO-Fe2O3-Nb2O5 for the first time. The crystal structure was determined by X-ray diffraction and d