Effect of Li2O content on structural and optical properties of Li2O-TeO2-As2O3-B2O3 glasses

Pujari, Navaneetha; Kalyani, Birampally; Edukondalu, Avula; Vardhani, C. P.

doi:10.1016/j.jpcs.2020.109627

Cited by 18 publications

(5 citation statements)

References 55 publications

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“…The density is increased as the fraction of the Li 2 O incorporation. 18 BZBLi-20 has shown the higher density as 3.46 ± 0.01 g.cm −3 among the other samples. It varied in a linear manner between 3.14 ± 0.01 to 3.46 ± 0.01 g.cm −3 .…”

Section: Resultsmentioning

confidence: 80%

“…B 2 O 3 (borate) based glasses are of scientifically interesting, due to the thermal stability, higher transparency, lower-melting points, mechanical stability, ability of glass formation with various oxides and good transparency. [4][5][6] Borate glasses showing their prominence in terms of antibacterial efficiency, radiation shielding, optical properties and also for industry oriented applications. Metal oxides like ZnO, Ag 2 O, Sb 2 O 3 etc enriched into borate based glass results in the transformation of tetragonal BO 4 structural units to trigonal BO 3 units.…”

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confidence: 99%

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Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Anterbedy,

Pallati,

Seema

et al. 2024

ECS J. Solid State Sci. Technol.

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An Li2O-incorporated bioactive glass system of chemical composition xLi2O-10BaO-10ZnO-(80-x)B2O3 with x=0-20mol% was synthesized by melt-quench route. Non-crystalline behaviour was confirmed with X-ray diffraction spectra. The antibacterial zone of inhibitions increased with Li2O incorporation. Experimental densities increased with Li2O molar content and molar volume decreased. UV-Optical absorption spectra confirmed a cut-off wave length (λc) increasing trend by NBOs. Indirect band gap decreased, direct band gap decreased, and Urbach energy increased with Li2O addition. The refractive index of the glass system also increased. Fourier transform infrared and Raman spectroscopy studies confirmed the structural variations and existence of metal-oxides in the glass matrix. The AC conductivity increased with frequency, temperature, and also Li2O content by almost three orders of magnitude. The findings of higher order conductivity (10-3Ω-1cm-1), improvement in the zone of inhibitions upto 15 mm against E.Coli., and 14 mm against Salmonella; higher value of refractive index (n>2) confirms the multiple applications of these glasses.

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Section: Resultsmentioning

confidence: 80%

mentioning

confidence: 99%

Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Anterbedy,

Pallati,

Seema

et al. 2024

ECS J. Solid State Sci. Technol.

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“…Nevertheless, for some glasses—for example Li 2 O–TeO 2 –As 2 O 3 –B 2 O 3 , 18 or in certain concentration ranges, the opposite trend can be observed. In the case of the Li 2 O–TeO 2 –As 2 O 3 –B 2 O 3 system, the addition of Li 2 O in the B 2 O 3 network modifies the host structure through the transformation of the structural units of the borate network from [BO 3 ] to [BO 4 ], and therefore leads to an increase in the glass connectivity 18,19 . At constant TeO 2 /Ga 2 O 3 ratio, T g decreases with increasing radius of the alkali metal ion.…”

Section: Resultsmentioning

confidence: 97%

“…3,17 Nevertheless, for some glasses-for TA B L E 2 T g and density of glasses belonging to the series 1 and 2 of the three systems TeO 2 -Ga 2 O 3 -M 2 O with M═Li, Na, or K. , and therefore leads to an increase in the glass connectivity. 18,19 At constant TeO 2 /Ga 2 O 3 ratio, T g decreases with increasing radius of the alkali metal ion. The similar variation of T g with the alkali ion radius was observed in other systems, such as in Sb 2 O 3 -M 2 O binary systems (MLi, Na or K).…”

Section: Density and Glass Transition Temperaturementioning

confidence: 99%

Preparation and characterizations of glasses in the TeO₂–Ga₂O₃–M₂O (M═Li, Na, K) systems

Verger,

Coudray,

Bertrand

et al. 2024

Int J of Appl Glass Sci

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Glasses in the TeO2–Ga2O3–M2O (M═Li, Na, or K) systems were synthesized by a melt‐quenching technique. The glass forming areas were delimited for each system. Systematic analyses were performed on two series of samples—the first one with a constant TeO2/Ga2O3 ratio of 85/15, that is, [(TeO2)0.85(Ga2O3)0.15]100−x[M2O]x with 0 ≤ x ≤ 25 (with a step of 5 mol%), the second one with a constant alkaline oxide concentration of 10 mol%, that is, [TeO2]90‐y[Ga2O3]y[M2O]10 with 5 ≤ y ≤ 15 (with step of 2.5 mol%). The values of the glass transition temperature, density, and optical transmission parameters (the positions of short‐ and long‐wavelength absorption edge and the maximum transmittance value) were determined. The changes in these parameters were studied for varying glass compositions. In addition, the values of refractive index were measured at various wavelengths across the whole transparency region reaching from the visible up to the mid‐infrared range.

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“…The mechanical features (Poisson ratio, microhardness, fractal bond conductivity, and longitudinal and shear velocities), as well as elastic moduli (EM) (Young, shear, longitudinal, and bulk), were investigated for five glass samples reported by [26]. The mentioned glass system contained TeO 2 -As 2 O 3 -B 2 O 3 -Li 2 O in composition.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Influence of Li2O Incrementation on Mechanical and Gamma-Ray Shielding Characteristics of a TeO2-As2O3-B2O3 Glass System

et al. 2021

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According to the Makishema–Mackenzie model assumption, the dissociation energy and packing density for a quaternary TeO2-As2O3-B2O3-Li2O glass system were evaluated. The dissociation energy rose from 67.07 to 71.85 kJ/cm3, whereas the packing factor decreased from 16.55 to 15.21 cm3/mol associated with the replacement of TeO2 by LiO2 compounds. Thus, as a result, the elastic moduli (longitudinal, shear, Young, and bulk) were enhanced by increasing the LiO2 insertion. Based on the estimated elastic moduli, mechanical properties such as the Poisson ratio, microhardness, longitudinal velocity, shear velocity, and softening temperature were evaluated for the investigated glass samples. In order to evaluate the studied glasses’ gamma-ray shield capacity, the MCNP-5 code, as well as a theoretical Phy-X/PSD program, were applied. The best shielding capacity was achieved for the glass system containing 25 mol% of TeO2, while the lowest ability was obtained for the glass sample with a TeO2 concentration of 5 mol%. Furthermore, a correlation between the studied glasses’ microhardness and linear attenuation coefficient was performed versus the LiO2 concentration to select the glass sample which possesses a suitable mechanical and shielding capacity.

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Effect of Li2O content on structural and optical properties of Li2O-TeO2-As2O3-B2O3 glasses

Cited by 18 publications

References 55 publications

Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Preparation and characterizations of glasses in the TeO₂–Ga₂O₃–M₂O (M═Li, Na, K) systems

Influence of Li2O Incrementation on Mechanical and Gamma-Ray Shielding Characteristics of a TeO2-As2O3-B2O3 Glass System

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Effect of Li2O content on structural and optical properties of Li2O-TeO2-As2O3-B2O3 glasses

Cited by 18 publications

References 55 publications

Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Antibacterial, Optical, Structural, and AC Conductivity Characteristics of Lithium-Doped Barium Zinc Borate Glasses for Multiple Applications

Preparation and characterizations of glasses in the TeO2–Ga2O3–M2O (M═Li, Na, K) systems

Influence of Li2O Incrementation on Mechanical and Gamma-Ray Shielding Characteristics of a TeO2-As2O3-B2O3 Glass System

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Preparation and characterizations of glasses in the TeO₂–Ga₂O₃–M₂O (M═Li, Na, K) systems