Effect of WO3 on EPR, structure and electrical conductivity of vanadyl doped WO3·M2O·B2O3 (M=Li, Na) glasses

Sheoran, A.; Agarwal, Ashish; Sanghi, Sujata; Seth, V. P.; Gupta, Shweta; Arora, Manoj K.

doi:10.1016/j.physb.2011.09.017

Cited by 21 publications

(7 citation statements)

References 28 publications

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“…The weak bands observed at 700 and 844 cm ¡1 are originating from asymmetric stretching vibration of VÀOÀV bridges. [18,19] The bands in the regions 1300À900 and 800À700 cm ¡1 were ascribed to the intramolecular stretching vibration of the PO 4 unit. The bands near 1400 cm ¡1 are due to P D O symmetric stretching.…”

Section: Ftir Analysismentioning

confidence: 99%

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Barde

2014

Journal of the Chinese Advanced Materials Society

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The glass samples of composition 60V 2 O 5 À5P 2 O 5 À(35 ¡ x) B 2 O 3 ÀxCeO 2 , (0 x 5) containing rare earth CeO 2 were prepared by the conventional melt-quenching method. The samples were characterized by X-ray diffraction, scanning electron microscopy, Fourier transform infrared spectroscopy and thermo gravimetricÀdifferential thermal analysis (TG-DTA). The glass transition temperature and crystallization temperature were determined from the TG-DTA analysis. The activation energy for endo and exo was evaluated. The DC electrical conductivity has been carried out in the temperature range 303À473 K. The maximum conductivity and minimum activation energy were found to be 0.039 S cm ¡1 and 0.15 eV, respectively, at 473 K for x D 1. The ionic conductivity was found to be dominant over the electronic conductivity and varies between 86% and 95%. The change in density and molar volume were discussed in terms of structural modification.

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Section: Ftir Analysismentioning

confidence: 99%

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Barde

2014

Journal of the Chinese Advanced Materials Society

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“…Nevertheless, the addition of certain transition metal oxides, such as WO 3 , to Li 2 O-B 2 O 3 glass makes them more moisture-resistant; also, the phonon losses can also be minimised to a large extent. Tungsten-containing glasses have been studied due to the favourable properties of tungsten ions, such as high electro-negativity, polarisability, large ion radius, and changeable valence [6,7].…”

Section: Introductionmentioning

confidence: 99%

Optical properties of amorphous Li₂O–WO₃–B₂O₃ thin films deposited by electron beam evaporation

Edukondalu

Rahman

Ahmmad

et al. 2016

Journal of Taibah University for Science

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“…The borate glasses containing alkali metal ions (particularly Li + ) have been studied with great interest for applications in solid state batteries, fast ion conductors, etc. [5][6][7][8][9]. The addition of alkali metals at low concentrations to pure borate glasses is presumed to convert the triangular borate units into the tetrahedral coordinated borate units without the creation of NBOs unlike their silicate counterparts.…”

Section: Introductionmentioning

confidence: 99%

Optical and thermal investigations on vanadyl doped zinc lithium borate glasses

Dalal

Khasa

Dahiya

et al. 2015

Journal of Asian Ceramic Societies

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Using standard melt-quench technique, transition metal oxide (2 mol% of V 2 O 5) doped glasses having composition xZnO•(30 − x)Li 2 O•70B 2 O 3 (x = 0, 2, 5, 7 and 10) are prepared. The density (D) is measured using buoyancy and found to be lying between 2.21 and 2.45 g/cm 3 with an increasing trend on substituting ZnO contents in place of Li 2 O. The theoretical optical basicity (th) is calculated and found to increase with increasing inclusion of ZnO indicating an increase in the ionic character. The molar refraction (R m), refractive index (n r) and molar polarizability (˛m) are calculated and explained on the basis of structural changes. The optical absorption spectra have been used to evaluate the values of optical band gap (E opt) and band tailing parameter (B). It is observed that E opt decreases with the increasing contents of ZnO in base glass matrix. The decrease in E opt is an evidence of enhancement in the number of non-bridging oxygen atoms (NBOs) thereby increasing the four-coordinated boron atoms. The as-quenched samples in bulk form are subjected to differential thermal analysis (DTA) to assess the glass transition temperature (T g), which is 476 • C for pure lithium borate glass. The variations suggest that the structure is being modified by the substitution of ZnO.

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Effect of WO3 on EPR, structure and electrical conductivity of vanadyl doped WO3·M2O·B2O3 (M=Li, Na) glasses

Cited by 21 publications

References 28 publications

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Optical properties of amorphous Li₂O–WO₃–B₂O₃ thin films deposited by electron beam evaporation

Optical and thermal investigations on vanadyl doped zinc lithium borate glasses

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Effect of WO3 on EPR, structure and electrical conductivity of vanadyl doped WO3·M2O·B2O3 (M=Li, Na) glasses

Cited by 21 publications

References 28 publications

Transport properties of rare earth CeO2doped phospho-vanadate glass systems

Transport properties of rare earth CeO2doped phospho-vanadate glass systems

Optical properties of amorphous Li2O–WO3–B2O3 thin films deposited by electron beam evaporation

Optical and thermal investigations on vanadyl doped zinc lithium borate glasses

Contact Info

Product

Resources

About

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Transport properties of rare earth CeO₂doped phospho-vanadate glass systems

Optical properties of amorphous Li₂O–WO₃–B₂O₃ thin films deposited by electron beam evaporation