Volume and thermal studies for tellurite glasses

El-Mallawany, R.; Abdel-Kader, A.; El-Hawary, M.M.; Elkhoshkhany, N.

doi:10.1007/s10853-009-4015-5

Cited by 29 publications

(10 citation statements)

References 34 publications

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“…For the glasses considered in this paper, the density (ρ) increases systematically by substituting V 2 O 5 with TeO 2 , as reported in Table 1. The obtained data are in excellent agreement with those reported in literature (El-Mallawany et al, 2010;Kjeldsen et al, 2014). The molar volume, in turn, decreases steadily from 45.6 to 38.7 cm 3 /mol.…”

Section: Resultssupporting

confidence: 92%

Tellurium Vanadate Glasses: V4+colorimetric Measure and Its Effect on Conductivity

et al. 2020

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This research comes as part of a broader resurgence of study on the electrical conductivity of glasses-and the mechanism for electronic motion in the amorphous network-spurred by interest in using glasses as matrices for solid-state batteries, taking advantage of the glasses' tailorable conductivity, chemical durability, and mechanical strength. The work presented in this study regards the preparation and characterization of some binary glasses belonging to the TeO 2-V 2 O 5 system. In particular, we focused on the glasses' electrical conductivity at room temperature and at higher temperatures as a function of the V 4+ ion content in the glass structure. The amount of V 4+ in the glass was determined by a colorimetric method. Moreover, density and thermal properties (T g , C p) were measured, and scanning electron microscopy (SEM) and X-ray diffraction (XRD) measurements were performed as well.

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Section: Resultssupporting

confidence: 92%

Tellurium Vanadate Glasses: V4+colorimetric Measure and Its Effect on Conductivity

et al. 2020

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“…(2) where the average force constant of the glass network andN b is the number of bonds per unit volume of the glass. Therefore, althoughthe average force constant increases, the number of network bonds per unit volume (N b ) gets decreased with increasing V 2 O 5 content due to the formation of non-bridging oxygens [7]. Hence the glass transition temperature decreases from 288°C to 232°Cwith increasing V 2 O 5 content.…”

Section: -2mentioning

confidence: 99%

Structural and thermal properties of vanadium tellurite glasses

Kaur

Khanna

et al. 2018

AIP Conference Proceedings

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V 2 O 5-TeO 2 glasses containing 10 to 50 mol% V 2 O 5 were prepared by melt quenching and characterized by Xray diffraction (XRD), density, Differential Scanning Calorimetry (DSC) and Raman studies.XRD confirmed the amorphous nature of vanadium tellurite samples. The density of the glasses decreases andthe molar volume increases on increasing the concentration of V 2 O 5. The thermal properties, such as glass transition temperature T g , crystallization temperature T c , and the melting temperature T m were measured. T g decreases from a value of 288 o C to 232°C.The changes in T g were correlated with the number of bonds per unit volume, and the average stretching force constant. Raman spectra were used to elucidate the short-range structure of vanadium tellurite glasses. FIGURE 3. DSC patterns of V 2 O 5-TeO 2 glasses. FIGURE 4.Raman spectra of V 2 O 5-TeO 2 glasses.

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“…Adding V 2 O 5 helps to improve their semiconducting, thermal, and optical features [11,14,[21][22][23][24][25][26]. Vanadia (V 2 O 5 ) is a strong oxidant, it can be applied in several uses in different fields such as industrial utilization, biological and pharmacological [27,28].…”

Section: Introductionmentioning

confidence: 99%

Transmission, buildup factors, and photon shielding capacity of vanadium reinforced tellurite glasses

Rammah

El‐Agawany

Gaafar

et al. 2021

Preprint

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The ionizing radiation shielding parameters of (90-y)TeO2-yV2O3-5CaO-5Na2O (TVCN): y = 5–20 mol% semiconductor glasses were investigated. The avarage track lengths of photons with different energies (0.015- 15 MeV) in the TVCN-glasses were simulated via MCNP-5 code, then the corresponding LAC were computed. Based on LAC values, the MACs were calculated and compared with values which obtained via XCOM software. The highest LAC achieved for low energy (0.015 MeV) and reduced from 199.549 to 169.891 cm− 1, while the lowest values achieved for gamma photon with higher energies and reduced from 0.188 to 0.161 cm− 1 with replacment of TeO2 compound by V2O5. The highest (I/Io) achieved for TVCN20 glasses and decreased from 0.703 to 0.172., while the lowest (I/Io) performed for TVCN5 glasses and decreased from 0.680 to 0.145 for glasses thickness varied between 1 and 5 cm. The thinner HVL was achieved for TVCN5 and increases from 0.003 to 3.684 cm, while the thicker HVL was achieved for TVCN20 and increases from 0.004 to 4.293 cm. The highest dose rate was recorded in the presence of theTVCN20 glasses and varied between 5.680 and 23.210 µSv/hr, while the lowest dose rate recorded in the presence of the TVCN5 glasses and varied between 4.807 and 22.448 µSv/hr for glass thickness varied in range between 1–5 cm. The highest values of the Zeff was recorded for glasses TVCN5 and varied between 21.209 and 50.402, while the lowest Zeff achieved for TVCN20 and varied between 18.489 and 40.479. The calculated buildup factors (EBF and EABF) reach maximum values for glasses TVCN5 while the lowest EBF and EABF achieved for glasses TVCN20. Therefore, the glasses TVCN5 have a higher ability to attenuate the incident gamma photons. Thus, the TVCN-glasses can be applied in various radiation shielding applications in medical area.

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Volume and thermal studies for tellurite glasses

Cited by 29 publications

References 34 publications

Tellurium Vanadate Glasses: V4+colorimetric Measure and Its Effect on Conductivity

Tellurium Vanadate Glasses: V4+colorimetric Measure and Its Effect on Conductivity

Structural and thermal properties of vanadium tellurite glasses

Transmission, buildup factors, and photon shielding capacity of vanadium reinforced tellurite glasses

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