Specific features of the glass formation in the R2O-B2O3, R2O-SiO2, and R2O-B2O3-SiO2 (R = Rb, Cs) systems

The glass formation was investigated in the R2O-B2O3 and R2O-SiO2 binary systems and the R2O-B2O3-SiO2 ternary systems, where R = Rb or Cs. Glasses in the R2O-B2O3, R2O-SiO2, and R O-2-B2O3-SiO2 (R = Rb, Cs) systems were synthesized. Glasses in the R2O-B2O3-SiO2 systems with a high B2O3 content were synthesized for the first time. The composition triangles with the glass formation regions and boundaries were constructed.