Synthesis and characterization of K2O-ZnO-GeO2-SiO2 optical glasses

Topological model of alkali germanate glasses and exploration of the germanate anomaly

“…Germanate glasses are known for their excellent optical properties, 1,2 making them suitable for application in optical systems [3][4][5] due to their low transmission losses 6 and low phonon energies 7 compared to many silicates. 8 They also feature high solubility for rare earth elements, 9,10 which has facilitated interest in the development of germanate-based optical sensors, 11 solar cells, 12 lasers, 13,14 and waveguides.…”

High toughness transparent glass‐ceramics with petalite and β‐spodumene solid solution as two major crystal phases

“…DSC measurement performed heat‐cool‐heat experiments at 10°C/min to learn glass transition temperature and crystallization temperature. The cooling process provides a known thermal history, and T g values were recorded as the onset temperature in the glass transition area 26,27 . Viscosity‐temperature parameters were measured at 20 K/min cooling rate in the range of 10 0.7 –10 6.6 Pa·s.…”

“…The cooling process provides a known thermal history, and T g values were recorded as the onset temperature in the glass transition area. 26,27 Viscosity-temperature parameters were measured at 20 K/min cooling rate in the range of 10 0.7 -10 6.6 Pa⋅s. High cooling rate was used to avoid the crystallization of lithium aluminosilicate supercooled liquid.…”