Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Schwarz, Jiří; Tichá, H.

doi:10.1007/s42452-021-04476-w

Cited by 5 publications

(2 citation statements)

References 32 publications

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“…This increased stability can limit the formation and mobility of vacancies within the glass network [51] which agrees with the previous data on crystallinity. This finding is consistent with the data of Schwarz et al [52] who found that by increasing the PbO 2 concentration, crystallinity improved.…”

Section: Resultssupporting

confidence: 93%

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

El-Desoky,

Abdel-Hady,

Mohamed

et al. 2024

Phys. Scr.

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This study focuses on the transformation of selected glasses consisting of 20Fe2O3-(5+x) PbO2-(75-x)TeO2 (where x = 0, 5, 10, 15, and 20 mol%) with varying concentrations of PbO2, into nanomaterials through annealing at a temperature close to the crystallization temperature (Tc). The physical and chemical properties of the resulting samples were investigated. The chemical structure was analyzed using Fourier Transform Infrared spectroscopy (FTIR), which revealed no significant chemical changes except for an increase in the concentration of PbO2. X-ray diffraction (XRD) was used to study the crystal structure. Improvements were seen with increasing PbO2 concentrations, and these improvements were further increased after the sample was annealed. Furthermore, positron annihilation lifetime (PAL) spectroscopy was used to study the microstructure, more precisely the size of vacancy-type defects. A correlation was established between the PAL and the properties of the samples. The size of the vacancy-type defects was confirmed by calculating the distribution of the long lifetime deduced from the PAL. In this work, the overall influence of PbO2 concentration and thermal treatment on the chemical and crystalline structures, electrical conductivity, and microstructure of the studied nanomaterials is highlighted. The results provide valuable insights into the relationship between the PAL and the properties of the samples and provide potential opportunities to tailor their properties for different applications.

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Section: Resultssupporting

confidence: 93%

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

El-Desoky,

Abdel-Hady,

Mohamed

et al. 2024

Phys. Scr.

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“…NBOs weaken the network structure by reducing the number of cross-links between the network formers. This leads to a decrease in the T g of the PbO-TeO 2 -CdO system [44][45][46].…”

Section: Thermal Propertiesmentioning

confidence: 99%

Impact of PbO on structural, thermal, optical and gamma ray shielding behaviour of TeO₂-CdO based glasses

Almuqrin,

Al-Ghamdi,

Aloraini

et al. 2023

Phys. Scr.

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A study was conducted to investigate the effect of an increase in the concentration of PbO on the structural, thermal, optical, and gamma ray shielding behavior of TeO2-CdO based glasses. The glasses were found to contain TeO4 and TeO3 units, as well as CdO metal oxide clusters, as indicated by the Raman spectrum. The glasses displayed minor weight loss (approximately 3%), suggesting high resistance to thermal degradation. With an increase in the concentration of PbO, the glass transition temperature (Tg), onset temperature (To), and crystallization temperature (Tc) all decreased. Additionally, the indirect band gap energy decreased from 3.497 – 3.337 eV as the lead oxide concentration increased. Moreover, the effects of PbO concentration on the linear attenuation coefficient (LAC) were investigated. The LAC values were found to be highest at 39.5 keV and decreased with increasing energy. As the PbO concentration increased, LAC values also increase. The Zeff displayed an inverse relationship with energy, except for an abrupt increase at 121.8 keV. The half value layer was found to be positively correlated with energy and varied with changes in PbO and CdO concentrations. The glasses demonstrated effective gamma radiation shielding properties, with the HVL remaining small even at higher energies, suggesting potential applications in industries such as medical imaging where thin shielding materials are preferred.

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Influence of titanium dioxide concentration on thermal properties of germanate-based glasses

Kowalska,

Pietrasik,

Kuwik

et al. 2024

J Therm Anal Calorim

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Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Cited by 5 publications

References 32 publications

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

Impact of PbO on structural, thermal, optical and gamma ray shielding behaviour of TeO₂-CdO based glasses

Influence of titanium dioxide concentration on thermal properties of germanate-based glasses

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Thermal expansion and structural properties of some (PbO)x(ZnO)35−x(TeO2)65 glasses

Cited by 5 publications

References 32 publications

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe2O3- PbO2-TeO2 glasses

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe2O3- PbO2-TeO2 glasses

Impact of PbO on structural, thermal, optical and gamma ray shielding behaviour of TeO2-CdO based glasses

Influence of titanium dioxide concentration on thermal properties of germanate-based glasses

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Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

Annealing effects on the structural, positron annihilation parameters, and electrical properties of Fe₂O₃- PbO₂-TeO₂ glasses

Impact of PbO on structural, thermal, optical and gamma ray shielding behaviour of TeO₂-CdO based glasses