Ga₂O₃-B₂O₃-ZnO-TiO₂-Tb₂O₃ glasses doped with different rare-earth oxides （Pr₆O₁₁， Ho₂O₃， Dy₂O₃） were prepared using the high-temperature melting method. The effects of doping different rare-earth oxides on the structure， physical properties， optical properties， and magneto-optical properties of Ga₂O₃-B₂O₃-ZnO-TiO₂-Tb₂O₃ glasses were studied. After doping with different rare-earth oxides， the density， refractive index， and Verdet constant of the glass all increase. As the wavelength of incident light and temperature increase， the absolute value of the glass’s Verdet constant gradually decreases. At a temperature of 298.15 K and an incident light wavelength of 633 nm， when the doping amounts of Tb₂O₃ and Ho₂O₃ were 40% and 1% respectively， the Verdet constant of the glass reached -156.45 rad/（T·m）， which is higher than that of the commercial Tb₃Ga₅O₁₂ crystal （-134 rad/（T·m））. At a temperature of 298.15 K and an incident light wavelength of 515 nm， the Verdet constant of the glass reached -189.80 rad/（T·m）， indicating its potential application value in the field of optoelectronic functional materials.

Ga₂O₃-B₂O₃-ZnO-TiO₂-Tb₂O₃ glasses;Tb³⁺ doping;Verdet constant;magneto-optical properties