article · Journal of Materials Research and Technology
Doping calcium lithium silicate borate glasses with tungsten trioxide produces a multifunctional material with tunable optical, structural, and electrical properties. Using a standard melt quenching technique, glass formulations were synthesised with varying concentrations of tungsten trioxide from zero to five mole percent. Structural testing confirmed the amorphous nature of the resulting matrices alongside distinct structural shifts observed through Raman spectroscopy. As the concentration of tungsten trioxide rises, the glass matrices experience changes in density and molar volume, accompanied by decreases in both packing density and oxygen packing density. Spectroscopic measurements reveal that adding tungsten trioxide enhances the optical absorbance of the materials. Dielectric evaluations show that both the dielectric constant and dielectric loss drop as frequency increases, whereas alternating current electrical conductivity steadily rises across the samples.
Advanced glasses with adjustable optical and electrical behaviour are vital components in modern technological hardware. By identifying how additives like tungsten trioxide modify the internal network and charge transport of borate glasses, researchers can systematically tailor materials for specialised electronic and optical environments, providing clearer pathways for designing stable, multifunctional glass compositions.
The abstract suggests these materials offer adjustable characteristics suitable for technological purposes, pointing toward potential application in electronic and optical components. This work is at an early laboratory stage, limited to sample fabrication via melt quenching and fundamental property measurements. Substantial applied testing and device-level integration would be required before hardware developers or materials manufacturers could assess commercial viability.
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This study demonstrates the promising potential of WO3-doped calcium lithium silicate borate glasses as a multifunctional material with adjustable characteristics for a range of current technological purposes. The melt quenching technique was used for the manufacture of calcium lithium silicate borate glass samples doped with WO3 with a chemical composition of (50-x)B2O3+10SiO2+15CaO+25Li2O +xWO3 where (x=0, 1, 2, 3, and 5 mol%). Raman spectroscopy and UV optical absorption methods were used to investigate the spectroscopic characteristics of glass samples. The dielectric characteristics of the produced glass samples were investigated by broadband dielectric spectroscopy (BDS) measurements. The extremely short-range ordering structural matrices revealed by X-ray diffraction have validated the amorphous nature. The Raman spectra of the calcium lithium silicate borate glass exhibit considerable differences from those of glasses containing WO3. The prepared glass samples exhibited an obvious relationship between the replacement of WO3 and their density and molar volume. As a result of a modification in the structure, the values of packing density (Vp) and oxygen packing density (OPD) decrease as the molar concentration of WO3 increases. The inclusion of WO3 increased the optical absorbance of the synthesised glasses, as demonstrated by UV-Vis optical absorption spectra. According to the dielectric characteristics, the dielectric loss and dielectric constant decrease with frequency, while the AC electrical conductivity exhibits a progressive increase.
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DOI: 10.1016/j.jmrt.2024.05.164
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