Synthesis and study on phase diagram of 1–10 mol% SnO2–doped Bi2O3

Bi2O3 materials doped with various SnO2 concentrations were prepared by colloidal process and solid state reactions to achieve high density and uniform microstructure. Thermal behavior, and crystalline phases of the SnO2–doped Bi2O3 (BSO) samples were investigated by differential thermal analyses, X-ray diffraction, and scanning electron microscopy. A new phase diagram of Bi2O3–(1–10 mol%) SnO2 system is proposed in this study. The results show that 1 mol% SnO2 doped concentration is totally dissolved in Bi2O3 without the existence of any impurity phases as compared to higher doping SnO2 concentration.