Structural, luminescence and NMR studies on Nd3+-doped sodium–calcium-borate glasses for lasing applications

James, Jaimson T.; Jose, Jephin K.; Manjunatha, M.; Suresh, K.; Madhu, A.

doi:10.1016/j.ceramint.2020.07.187

Cited by 37 publications

(14 citation statements)

References 52 publications

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“…Finally, it can be seen from figure 12 that the maximum phonon energy [68][69][70][71] of all the examined glasses are nearly the same, which are in the range of 736-740 cm −1 . These values are slightly lower than most of tellurite glasses [63,72] but significantly lower than silicate glasses [73,74], borate glasses [75], phospahate glasses [76].…”

Section: Raman Spectramentioning

confidence: 65%

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Marzuki

Ega

Saraswati

2022

Mater. Res. Express

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New tellurite glasses with composition (in mol%): 60TeO2–(30-x)ZnO–5Bi2O3–5TiO2-xB2O3 (where x = 0, 2.5, 5.0, 7.5 and 10.0) were fabricated using conventional melt quenching method. Compositional dependence of the glasses on their density, thermal, refractive index and optical properties were investigated. X-Ray Diffraction analysis was carried out to confirm the nature of the thus formed glasses. Density, refractive index, and absorption spectra were measured at room temperature from which other glass characteristics such as polaron radius, oxygen packing density, field strength, B3+ interatomic distance, band gap energy, and Urbach tail were determined. Thermal characterisation to determine the change in glass transition temperature, glass crystallisation, melting point, and glass stability was carried out using Differential Scanning Calorimetry. A discussion was made in order to understand the results in terms of the ratio of bridging oxygen to non-bridging oxygen ions (BO/NBO). It was found that the addition of B2O3 results in increasing oxygen packing density, glass transition temperature, BO/NBO ratio and band gap energy, while decreasing density, refractive index, field strength, glass stability and Urbach tail energy. With increasing B2O3 concentration density changed from 5.879 to 5.646 g/cm3, refractive index 1.875 to 1.741, working temperature range (ΔT = 660C) and phonon energy within the range of 736 – 740 cm-1.

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Section: Raman Spectramentioning

confidence: 65%

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Marzuki

Ega

Saraswati

2022

Mater. Res. Express

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“…In order to investigate the effect of Ho 3+ doping on the physical and optical properties of the prepared glasses, various physical and optical parameters, such as, density, molar volume, average boron-boron separation, packing density, oxygen packing density (OPD), average coordination number, concentration of holmium ions (C Ho 3+ ), holmium inter-ionic distance (r i ), polaron radius (r p ), field strength (F) of holmium field, molar refractivity, polarizability, reflection loss, transmission coefficient, and dielectric constant were evaluated using the various theoretical formulae [18,[21][22][23] and experimentally acquired results.…”

Section: Physical Properties With Theoretical Discussionmentioning

confidence: 99%

“…Chemically, glasses having a high electron density would be unstable. The basic nature of the B0H glasses, therefore, means that, with a low level of basicity, the chemistry of the created glasses increases [20][21][22][23][24][25] as the amount of basicity grows with low electron donations. The theoretical optical basis was further calculated and compared to the empirically measured optical fundamental values.…”

Section: Physical Properties With Theoretical Discussionmentioning

confidence: 99%

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Concentration Dependent Improved Spectroscopic Characteristics and Near White Light Emission in Boro Phosphate Glasses Doped with Holmium

Ansari

Alshahrie

et al. 2022

Applied Sciences

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The physical, structural, thermal, and optical properties of heavy metal (Ho3+) oxide incorporated lithium-boro-phosphate glass prepared utilizing melt quenching process are presented in this paper as a function of dopant concentration. To support the findings of the FTIR and DSC studies, many theoretical, experimental, physical, and optical parameters were calculated. XRD and FTIR measurements revealed the prepared glasses’ amorphous nature and the presence of significant borate functional groups. The optical band gap, Urbach energy, and steepness characteristics were tested to validate the structural results. The emission spectrums were recorded in the prepared glasses for an excitation of 450 and 550 nm to find powerful emission color. The color co-ordinates (0.33, 0.41) were found to be quite comparable to white light color co-ordinates. The present glasses can, therefore, be ideal candidates for possible applications with light-emitting diodes.

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“…Borate has the characteristics of flame retardancy, heat resistance, high hardness, high strength, wear resistance, and lightweight. Thus, it has been widely used in optical materials, lubricant additives, fuel materials, molecular sieves, and other fields. − Among them, potassium metaborate is an important and valuable species that could be used in adhesives, fluxes, fast-dissolving molten silicate, and so forth . Moreover, KBO 2 is an essential raw material for the industrial production of KBH 4 , which is a promising reliable hydrogen carrier for its ease and tunable hydrogen release. , In this case, it is expected that the market demand for KBO 2 will continue to grow further, which provides a massive challenge for its long-term production.…”

Section: Introductionmentioning

confidence: 99%

Solid–Liquid Phase Equilibria of the Ternary System (KBO₂ + K₂SO₄ + H₂O) at 288.15, 308.15 K, and 0.1 MPa

Yuan

et al. 2021

J. Chem. Eng. Data

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Considering the significance of fundamental phase equilibrium data in resource exploitation from salt lake brines, the solid−liquid phase equilibria of the ternary system (KBO 2 + K 2 SO 4 + H 2 O) at 288.15, 308.15 K, and 0.1 MPa were investigated using the isothermal dissolution method. Along this line, the solubilities and physicochemical properties of densities were experimentally determined. Based on the experimental data, phase diagrams and the related physicochemical property diagrams against composition were plotted. It was found that there are one invariant point, two univariate solubility curves, and two crystalline regions corresponding to potassium metaborate hydrate (KBO 2 •1.33H 2 O) and arcanite (K 2 SO 4 ) in the ternary phase diagrams at 288.15 and 308.15 K. In addition, they belong to the hydrate type I and neither double salt nor solid solution was formed. The distributive behaviors of density against the concentration of KBO 2 in the equilibrium solution at two temperatures were similar. Moreover, the theoretical values of density were calculated, which were found to be consistent with the experimental values, further demonstrating the accuracy and reliability of this work.

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Structural, luminescence and NMR studies on Nd3+-doped sodium–calcium-borate glasses for lasing applications

Cited by 37 publications

References 52 publications

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Concentration Dependent Improved Spectroscopic Characteristics and Near White Light Emission in Boro Phosphate Glasses Doped with Holmium

Solid–Liquid Phase Equilibria of the Ternary System (KBO₂ + K₂SO₄ + H₂O) at 288.15, 308.15 K, and 0.1 MPa

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Structural, luminescence and NMR studies on Nd3+-doped sodium–calcium-borate glasses for lasing applications

Cited by 37 publications

References 52 publications

Effect of B2O3 addition on thermal and optical properties of TeO2–ZnO–Bi2O3–TiO2 glasses

Effect of B2O3 addition on thermal and optical properties of TeO2–ZnO–Bi2O3–TiO2 glasses

Concentration Dependent Improved Spectroscopic Characteristics and Near White Light Emission in Boro Phosphate Glasses Doped with Holmium

Solid–Liquid Phase Equilibria of the Ternary System (KBO2 + K2SO4 + H2O) at 288.15, 308.15 K, and 0.1 MPa

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Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Effect of B₂O₃ addition on thermal and optical properties of TeO₂–ZnO–Bi₂O₃–TiO₂ glasses

Solid–Liquid Phase Equilibria of the Ternary System (KBO₂ + K₂SO₄ + H₂O) at 288.15, 308.15 K, and 0.1 MPa