Enhanced elastic and optical attributes of boro-telluro-dolomite glasses: Role of CeO2 doping

Bulus, Ibrahim; Hussin, Rosli; Ghoshal, S.K.; Tamuri, Abd. Rahman; Jupri, Siti Aishah

doi:10.1016/j.ceramint.2019.06.089

Cited by 35 publications

(3 citation statements)

References 54 publications

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“…A factor that contributes to the broad absorption edge is the disorder in the glass structure [15] that caused the valence and conduction band to vary in different ways and different degrees. Hence, this can be one of the evidences that proves the amorphous nature of the samples [16]. It also shifted to the longer wavelength with the addition of CeO2.…”

Section: Introductionsupporting

confidence: 59%

Optical Properties of Cerium Oxide Doped Zinc Borotellurite Glass

2023

SRJ

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The addition of rare earth, zinc, and borate in tellurite glass was found can enhance the glass properties and overcome its existing weaknesses. These include improving the glass forming ability and stability. In this study, cerium-doped zinc borotellurite glasses were produced using conventional melt-quenching technique and the optical properties of the glasses were investigated. UV-VIS spectra show that the absorption edge shifted to a higher wavelength with CeO2 addition from 0 until 0.05 mol. Consequently, the direct and indirect optical band gap was found to decrease from 3.60 to 2.07 eV and 3.28 to 1.46 eV respectively. On the contrary, the refractive index was found to increase from 2.326 to 3.017. This is attributed to the presence of cerium ions and the formation of non-bridging oxygens. Besides that, the Urbach energy found to be maximum at 0.02 mol CeO2 and minimum at 0.00 mol CeO2. This indicates that there are some structural disorders occur in the glass network as CeO2 introduced into the system. The molar refraction, molar polarizability, oxide ion polarizability and optical basicity exhibited similar trend of data as the CeO2 content was increased which signifies the relation of these parameters. Meanwhile, the metallization criterion is reported to be decreased, indicating that the glass sample become more metallized with the addition of cerium oxide.

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Section: Introductionsupporting

confidence: 59%

Optical Properties of Cerium Oxide Doped Zinc Borotellurite Glass

2023

SRJ

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“…The diamond pyramid hardness number HV is the ratio of applied load to contact surface (area). Low load hardness test were conducted with load levels of 50 N with dwell period of 30s (Marzouk, 2009) The period of pulse reception display were evaluated longitudinal velocity (V L ) and shear velocity (V S ) (Bulus, Hussin, Ghoshal, Tamuri, & Jupri, 2019).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Correlation of Optical and Mechanical Properties of Silver Nanoparticles Sensitized Europium Doped Phosphate Glasses

et al. 2020

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Magnesium-zinc-sulfophosphate glasses with various concentration of Silver nanoparticles (AgNPs) compose of 63.5P2O5–20MgO –15ZnSO4–1.5Eu2O3 –yAgNps (y = 0.0, 0.1, 0.3, 0.5, 0.7,0.9 and 1.1 g in excess) were prepared via melt-quenching method. As-Quenched glasses were then characterized to establish the relationship between optical and mechanical characteristics. Densities were found to increase from 3.0720 to 4.3304 g.cm-3 with increase in AgNPs embedding levels, suggesting the network shrinkages and enhanced compactness. The Young’s, shear and bulk modulus of glasses were observed to enhance with the increase in AgNPs contents. The Poisson’s ratio value increased from (0.0978 to 0.1416) while values of both Vickers hardness (from 0.0658 to 0. 0.0682 GPa) as well as (from 0.8350 to 0.8916) were increased. This necessitate the evaluation of ultrasonic properties and mechanical properties of the synthesized glasses and further analysed by various analytical tools. The studied glass may be useful for the development of hard surface engineering.

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“…Several studies suggest that tellurite-based glasses can be a better choice for photon shielding because of its high density. [20][21][22]…”

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confidence: 99%

Thermal, structural, optical, and photon shielding studies of cerium‐doped barium tellurite glasses

Grover¹,

Kaur

Pandey³

2023

Luminescence

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A series of tellurite‐based glasses are prepared by using a melt‐quenching method. The effect of cerium on the physical, thermal, structural, optical, spectroscopic, and shielding properties of barium tellurite glass samples is studied. It has been observed that the thermal stability factor increases with increasing cerium ion (Ce3+) concentration. The density and other physical parameters such as ion concentration and molar volume are calculated using the Archimedes principle. An increase in optical band gap and density suggests a decrement in non‐bridging oxygens. These results are in accordance with Raman results. The blue emission in prepared glasses is studied in terms of International Commission on Illumination chromaticity coordinates. Moreover, various shielding properties such as mass attenuation coefficient, linear attenuation coefficient, effective atomic number, half‐value layer, and tenth‐value layer have also been determined to understand the photon shielding characteristics of as‐prepared glass samples.

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Enhanced elastic and optical attributes of boro-telluro-dolomite glasses: Role of CeO2 doping

Cited by 35 publications

References 54 publications

Optical Properties of Cerium Oxide Doped Zinc Borotellurite Glass

Optical Properties of Cerium Oxide Doped Zinc Borotellurite Glass

Correlation of Optical and Mechanical Properties of Silver Nanoparticles Sensitized Europium Doped Phosphate Glasses

Thermal, structural, optical, and photon shielding studies of cerium‐doped barium tellurite glasses

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