Regulation of Y2O3 on glass stability of Ga2O3-rich oxyfluoride glasses
Source abstract
Abstract
Abstract In this work, a novel Ga2O3-rich oxyfluoride glass, 32Ga2O3-10BaF2-(58-x) SrO-xY2O3 (x = 0–10 mol%), was prepared by the conventional melt-quenched method. The function between stability regulation of Ga2O3-rich oxyfluoride glass and Y2O3 concentration was investigated using differential thermal analysis and crystallization kinetics. After heat treatment, the crystalline phases were confirmed by X-ray diffraction. The structural change caused by Y2O3 were investigated via Raman spectroscopy. Results indicate that the glass containing 6 mol% Y2O3 exhibits the best glass stability (ΔT = 137°C, S = 4.95°C, Hr = 0.3316). The crystallization kinetics results suggest that surface nucleation with one-dimensional growth could be the dominant crystallization mode in the stable Ga2O3-rich glass containing 6 mol% Y2O3. The enhanced glass stability is attributed to the improved network structure regulated by Y2O3.
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Research context
OpenAlex topics: Glass properties and applications · Luminescence Properties of Advanced Materials · Aerogels and thermal insulation
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