Structural, thermal and optical properties of TeO2–ZnO–CdO–BaO glasses doped with VO2+

Sreenivasulu, V. Bharath; Upender, G.; Mouli, V. Chandra; Prasad, M.

doi:10.1016/j.saa.2015.03.085

Cited by 35 publications

(2 citation statements)

References 51 publications

(47 reference statements)

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“…This behavior is consistent with the "germanate anomaly" in alkali germanate glasses where at a certain concentration of alkali oxides, the increment in nonbonding oxides (NBO) affects the glass density [9,10]. At higher concentrations of CdO, an increase in density occurs probably because of the large Cd ion; such behavior has been previously reported in glasses, crystals, and solutions [11,12]. DTA curves of the fabricated glasses are presented in Figure 2b; the exothermal peaks are associated to T g or T c , and there is one endothermic peak for glass C80, which corresponds to a melting point.…”

Section: Density and Thermal Propertiessupporting

confidence: 88%

Nanocrystallization of the Cd3Al2Ge3O12 Garnet in Glasses of the CdO-TeO2-GeO2 System

Alvarado-Rivera¹,

Hernández²,

Zayas³

et al. 2018

Advances in Glass Science and Technology

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In this study, a series of glasses of the system xCdO-10TeO 2-(90−x)GeO 2 were fabricated, varying the modifier oxide content from 10 to 80 wt%. According to XRD analysis, partial crystallization occurred for the glass 60CdO.10TeO 2 .30GeO 2 presenting the formation of GeO 2 and CdTeO 3 ; the 70CdO.10TeO 2 .20GeO 2 glass shows sharp diffraction peaks corresponding to the Cd 3 Al 2 Ge 3 O 12 garnet crystalline phase. Transmission electron microscopy showed that the garnet crystals have sizes below 20 nm. At the highest concentration of CdO (80 wt%), a transparent orange glass can be obtained, and this sample can be identified as an inverted glass where CdO participates as a network former. The optical band gap of the glasses decreases as CdO content increases from 3.91 to 3.0 eV. In general, all glasses show a typical broad emission when excited with UV light (325 nm); chromatic coordinates were calculated and pointed out the presence of emissions in the white, green, and yellow regions. In summary, the obtained glasses are a promising material for IR technologies, nonlinear optics, and design of solid state lighting devices.

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Section: Density and Thermal Propertiessupporting

confidence: 88%

Nanocrystallization of the Cd3Al2Ge3O12 Garnet in Glasses of the CdO-TeO2-GeO2 System

Alvarado-Rivera¹,

Hernández²,

Zayas³

et al. 2018

Advances in Glass Science and Technology

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“…The 𝑅 𝑚 and 𝛼 𝑚 values increase with the increase of K2O content mol%. Therefore the increase in molar volume, Theoretical optical basicity and Broad Optical absorption band with an increase of K2O content, these suggested that this will be due to transition metal ions of local states or NBO in the glass matrix.metallization is defined from the Herzfeld theory, it means the metallization is the ratio of for an expectation of prepared present glass samples are acting as an insulator[27]. Small changes in the metallization values were observed.…”

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confidence: 96%

Structural, Optical and Electrical Properties of Copper Doped Alkali Borate Glasses

Srinivas

Komaraiah

et al. 2021

Preprint

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The compositional effect on Physical properties, Optical absorption and Electrical properties of glass composition xK2O - (25-x) Li2O-12.5BaO-12.5MgO-49B2O3-1CuO (x =0, 5, 10, 15, 20 and 25mol %) was prepared by the melt-quenching technique. From optical absorption spectra few parameters, like Urbach energy, indirect allowed, reflection loss (R), refractive index (n), molar polarizability(αm) molar refractivity (Rm), and theoretical optical basicity (Λth) values of prepared glass samples were measured. The values of Rm, αm, and Λth were increase with increasing of x mol%. The Eopt, R, and n values were changed very small with x mol%, which may be due to the non-bridging oxygen’s moments in the glass matrix. The FTIR spectrum of prepared borate glasses indicates that the influence of BO3 and BO4 units of boron atoms. The explicit vibrational peaks were exhibited of Li–O, K–O, Mg–O, and Ba–O bonds in glass network, and A.C conductivity study was devised to know the structural information about the glass network. The drastic change in the ionic conductivity as a function of the alkali content in the glass composition was analyzed by considering both the ionic mobility and the glass structure. Some physical, optical, and electrical values varied non-linearly with the K2O content, which may influence of non- bridging oxygens or mixed alkali effect.

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Investigation of the Optical Spectra and Spin-Hamiltonian Parameters for Vanadyl in Zinc Phosphate Glass

et al. 2020

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Structural, thermal and optical properties of TeO2–ZnO–CdO–BaO glasses doped with VO2+

Cited by 35 publications

References 51 publications

Nanocrystallization of the Cd3Al2Ge3O12 Garnet in Glasses of the CdO-TeO2-GeO2 System

Nanocrystallization of the Cd3Al2Ge3O12 Garnet in Glasses of the CdO-TeO2-GeO2 System

Structural, Optical and Electrical Properties of Copper Doped Alkali Borate Glasses

Investigation of the Optical Spectra and Spin-Hamiltonian Parameters for Vanadyl in Zinc Phosphate Glass

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