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Structural, Thermal, and Spectroscopic Properties of P2O5-KF-Al2O3 Glassy System
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Structural, Thermal, and Spectroscopic Properties of P2O5-KF-Al2O3 Glassy System
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Journal Article
Structural, Thermal, and Spectroscopic Properties of P2O5-KF-Al2O3 Glassy System
2023
Overview
The present study reports on the synthesis and investigation of a series of oxyfluoride phosphate glasses having a composition of (50-x)P2O5-50KF-xAl2O3 (PKAl), with x = 8 mol.%, 12 mol.%, 16 mol.%, and 20 mol.%, by the melt-quenching method. The introduction of Al2O3 in the composition promotes a stabilizing effect, producing stable glasses in air and water ambient conditions. X-ray diffraction (XRD) showed the amorphous characteristics of the materials. The glasses presented high transparency in the UV-Vis-NIR regions (340–2000 nm). Differential scanning calorimetry (DSC) results showed that PKAl glasses have low glass transition temperature values (398–456°C). Fourier-transform infrared spectroscopy (FTIR) spectra showed structural changes caused by variations in P2O5-Al2O3 ratios. The density values of PKAl glasses increased with Al2O3 concentration from 2.45 g/cm3 to 2.50 g/cm3. The molar volume decreases from 39.97 cm3/mol to 36.81 cm3/mol. The prepared new oxyfluoride phosphate glasses can be useful for photonic device applications such as lasers and light-emitting diodes (LEDs).
Publisher
Springer Nature B.V
