Characterization of new tellurite glasses and crystalline phases in the TeO2–PbO–Bi2O3–B2O3 system

A new kind of tellurite glass based on TeO2–B2O3–Bi2O3–PbO system is prepared. It is found that B2O3 is the component that contributes most to increase the thermal stability of the glasses, while Bi2O3 is the most contributing oxide to decrease the thermal stability. The structural origins for the variations of the thermal stability with the glass composition are discussed based on the Fourier-transform infrared (FTIR) spectrometry measurement. The present glasses show potential to be used for photonic devices and low melting point sealing glasses.