Neutron diffraction investigation of a tellurite-tungstate glass

Kozhukharov, V.; Neov, S.; Gerasimova, I.; Mikula, P.

doi:10.1007/bf01114729

Cited by 49 publications

(18 citation statements)

References 20 publications

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“…Thus, it appears that the alkali concentration is too small to affect the core level binding energy, and WO 3 does not affect the structure significantly. Previous structural investigations by Raman and neutron scattering have considered the existence of both WO 6 and WO 4 units, but the former units appear to be present predominantly [10,[19][20][21]. Since we do not observe measurable changes in the W 4f 7/2 peak, the fraction of tungsten in the two oxidation states is not affected by the W/Te ratio; primarily it remains in the +6 oxidation state.…”

Section: Core Level Photoelectron Spectra Of Lithium Tungsten Tellurimentioning

confidence: 57%

Structure of alkali tungsten tellurite glasses by X-ray photoelectron spectroscopy

Lim

Jain

Toulouse

et al. 2004

Journal of Non-Crystalline Solids

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Section: Core Level Photoelectron Spectra Of Lithium Tungsten Tellurimentioning

confidence: 57%

Structure of alkali tungsten tellurite glasses by X-ray photoelectron spectroscopy

Lim

Jain

Toulouse

et al. 2004

Journal of Non-Crystalline Solids

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“…1a The room-temperature g-WO 3 modification, with P2 1 =n space group (15), is composed of corner-sharing WO 6 octahedra having large distortion. Its IR spectrum is dominated by a strong and large band centered at about 850 cm À1 with two shoulders at 770 and 910 cm À1 .…”

Section: Infrared Spectroscopymentioning

confidence: 99%

“…The glass formation domain has been determined and the thermal parameters examined by several authors (1,4,5). Neutron scattering experiments and vibrational spectroscopy studies, especially Raman analysis, were conducted to follow the effect of WO 3 on the structure of tellurite glasses (2,(6)(7)(8)(9)(10)(11). On the other hand, no structural characterizations by X-ray absorption (XANES) and X-ray photoelectron (XPS) spectroscopies were undertaken, in our knowledge, on these tungsten-oxide glasses.…”

Section: Introductionmentioning

confidence: 99%

TeO2–WO3 Glasses: Infrared, XPS and XANES Structural Characterizations

Charton

Gengembre

Armand

2002

Journal of Solid State Chemistry

158

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“…The TeO 2 -ZnO system shows good and stable glass-forming ability with a broad region. However this glass formation strongly depends on the cooling rate and the size of the melt, especially in the TeO 2 -rich region [6] . The ZnO-TeO 2 system was used as a basis for multi-component optical glass synthesis and has been reported as a useful medium for ultra-low loss (1dB 1000 m −1 ) optical fibers for wavelengths in the 3.5-4 µm region [5] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Optical Properties of ZnO-TeO2 Glass System

Sidek¹,

Rosmawati²,

Talib³

et al. 2009

American J. of Applied Sciences

160

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Problem statement: Systematic series of ZnO-TeO 2 glasses with mole fraction of 0.10-0.40 ZnO content with an interval of 0.05 were studied to obtain their physical and optical properties. Approach: All the glass samples were synthesized by rapid melting quenching method under controlled conditions, while their refractive indices (n) were measured by the EL X-02C high precision ellipsometer. The room temperature absorption of all glass samples were determined using Camspec M350 double beam UV-visible spectrophotometer. The infrared (IR) spectra of each glass samples were recorded with Thermo Nicolet Fourier Transform-Infrared (FT-IR) spectrophotometer. Their physical properties were measured and the amorphous nature was confirmed by the x-ray diffraction technique. Results: The increase of refractive index of the TeO 2 -ZnO glasses with the addition of ZnO was best explained in terms of either electron density or polarizability of the ions. The absorption edge shift to higher energy (shorter wavelength) with increasing ZnO content was observed in this glass. The optical band gap (E opt ) of zinc tellurite glass decreases with increasing of ZnO content probably due to the increment of Non-Bridging Oxygen (NBO) ion contents which eventually shifted the band edge to lower energies. Conclusion/Recommendation: The physical and optical properties of zinc tellurite glasses were found generally affected by the changes in the glass composition. FTIR spectra of zinc tellurite glass revealed broad, weak and strong absorption bands in the investigated range of wave numbers from 4000-400 cm −1 which associated with their corresponding bond modes of vibration and the glass structure. The addition of ZnO into TeO 2 glass network shifted the major band from 626 cm −1 (for pure TeO 2 glass) to the band at around 669 cm −1 .

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Neutron diffraction investigation of a tellurite-tungstate glass

Cited by 49 publications

References 20 publications

Structure of alkali tungsten tellurite glasses by X-ray photoelectron spectroscopy

Structure of alkali tungsten tellurite glasses by X-ray photoelectron spectroscopy

TeO2–WO3 Glasses: Infrared, XPS and XANES Structural Characterizations

Synthesis and Optical Properties of ZnO-TeO2 Glass System

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