Glass-forming region and physical properties of the glasses in the TeO2− MoO3− Bi2O3 system

Zamyatin, O. A.; Plekhovich, А.D.; Zamyatina, E.V.; Sibirkin, A. A.

doi:10.1016/j.jnoncrysol.2016.08.027

Cited by 29 publications

(5 citation statements)

References 43 publications

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“…The glass density rose linearly from 2.458 to 2.627 g•cm -3 with an increase in the La 2 O 3 /CaO ratio from 0 to 2.50. The glass density is determined primarily by the chemical composition, precisely, the atomic masses of its components [20,21]. In terms of the atomic mass of the elements in the studied compositions, the atomic mass of La 3+ (138.905) is much larger than that of the Ca 2+ (40.078), and the density of the glasses increased significantly with the replacement of CaO by La 2 O 3 .…”

Section: Densitymentioning

confidence: 98%

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Wu¹

2023

Ceramics - Silikaty

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Alkali-free aluminoborosilicate glasses were prepared by the conventional melting method. The effect of the replacement of CaO by La 2 O 3 on the structure, thermal, and dielectric properties of the glasses was investigated by FTIR, DSC, with thermal expansion instruments, and an impedance analyser. With increasing ratios of La 2 O 3 to CaO, the densities of the glasses increased linearly from 2.458 to 2.627 g•cm -3 . Meanwhile, the polymerisation degree of the glass network increased first and then decreased. The glass transition temperature, crystallisation onset temperature and expansion softening temperature showed a gradually increasing trend, while the thermal stability firstly deteriorated, then gradually improved. Additionally, the coefficient of thermal expansion (CTE), dielectric constant and dielectric loss initially decreased, followed by an increase. The sample with the La 2 O 3 /CaO ratio of 1.00 showed excellent properties: had a low CTE (2.71 × 10 -6 °C-1 ), had a dielectric constant (5.23), and a dielectric loss (1.12 × 10 -3 ), which means it is a promising material for integrated circuit packaging applications.

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Section: Densitymentioning

confidence: 98%

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Wu¹

2023

Ceramics - Silikaty

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“…One of these factors is the rise of the coordination that leads to the increment of the number of bonds per glass formula unit, the dimensionality of the glasses and the mean cross-link density. Mo cation has a high field force, which greatly polarizes its atmosphere and enhances the interaction between ions and dipoles [31]. These factors incorporate in the increment of the stiffness and then the elastic parameters.…”

Section: Determination Of Mechanical Propertiesmentioning

confidence: 99%

“…These features enhanced their surface hardness, optical sensitivity and nonlinear optical features along with the increment of bridging oxygen. According to the ratios of MoO 3 in the tellurite -based glasses, it is predicted that they have a glass modifier role with MoO 6 or have glass former role with MoO 4 structural units [30,31]. On the other hand, the primary expectations from an ideal radiation shield are to reduce gamma-ray intensity to safe levels.…”

Section: Introductionmentioning

confidence: 99%

Mechanical, structural and nuclear radiation shielding competencies of some tellurite glasses reinforced with molybdenum trioxide

et al. 2021

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In this study, a group of molybdenum boro-tellurite glass samples and their mechanical parameters and nuclear radiation shielding competencies were investigated. The amorphous structures of molybdenum boro-tellurite glasses were confirmed by XRD patterns. Synergistic positive effect of MoO3 reinforcement on gamma ray attenuation properties and mechanical parameters was investigated. For this aim, and in the energy range 0.015–15 MeV, the mass attenuation coefficients (MAC) had been computed by computational methods. At 0.015 MeV, the MAC values increase from 28.06 to 33.25 (cm2 g−1) as the MoO3 content increases from 0 to 30 mol %, while the half value layer values decrease from 4.84 to 3.88 (cm) at 15 MeV. The longitudinal ultrasonic velocity (VL) and shear ultrasonic velocity (VS), longitudinal modulus (L), shear modulus (S), bulk modulus (K), and Young’s modulus (Y) increase from 3450 to 3637 (m s−1), from 1994 to 2146 (m s−1), from 53.44 to 64.88 (GPa), from 17.86 to 22.58 (GPa), from 29.63 to 34.77 (GPa), and from 44.61 to 55.69 (GPa), respectively. The analysis of the shielding and mechanical indicates best protection of the explored glasses for γ-irradiation. Based on the analysis, the glass 30MoO3-70TeO2 with the maximum MoO3 addition indicated best γ-irradiation protection and mechanical parameters among the explored glasses.

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“…These outstanding properties make tellurite glasses are most favoured use in application relating to solid state lasers, optical amplifiers, non-linear optical devices and optical data storage [6][7][8][9] Unlike other glass formers, pure TeO2 does not have ability to form glass under normal condition easily without addition of another oxide which acts as modifier in the system. The present of modifiers like alkali, alkaline earth and transition metal oxide/heavy metal oxide into TeO2 networks is crucial to initiate the formation of a glass from TeO2 powder 10 Furthermore, combination of different oxide also improve the linkage between Te-O chains which lead to increase in glass forming ability 11 The ZnO-TeO2 system was used as a basis for multi-component optical glass synthesis and The TeO2-ZnO system shows good and stable glass-forming ability with a broad region.…”

Section: Introductionmentioning

confidence: 99%

A Review on Physical and Optical Properties of Zinc Tellurite Glasses Co-doped with different rare earth ions

Bairagi¹,

ANSAR²

2021

jusps-B

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In this work we review the effect of physical and optical properties with different ion zinc contents of tellurite base glass. The physical properties of the glasses were evaluated and the change in density, molar volume and ionic packing density in these glasses indicates the effect of ZnO different content show on the glasses structure. The study of optical properties such as the optical band gap and refractive index of zinc tellurite glass were studied. Zinc Tellurite glasses doped with Er3+ ions were synthesized by varies researcher. The glasses were characterized by X- ray diffraction, optical absorption and photoluminescence spectra. The glassy nature of zinc Tellurite host glass has been confirmed through XRD measurements. The glasses doped or co-doped with rare-earth ions have generated much interest due to the possibility of several promising applications such as optical data storage, visible laser, fibre amplifier, optical communication and sensor devices

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Glass-forming region and physical properties of the glasses in the TeO2− MoO3− Bi2O3 system

Cited by 29 publications

References 43 publications

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

EFFECT OF REPLACEMENT OF CaO BY La₂O₃ ON THE STRUCTURE, THERMAL AND DIELECTRIC PROPERTIES OF ALKALI-FREE ALUMINOBOROSILICATE GLASSES

Mechanical, structural and nuclear radiation shielding competencies of some tellurite glasses reinforced with molybdenum trioxide

A Review on Physical and Optical Properties of Zinc Tellurite Glasses Co-doped with different rare earth ions

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