Color centers in tungsten phosphate glasses and amorphous tungsten trioxide films

Zakis, Yu. R.; Lūsis, A.; Lagzdons, Y.L.

doi:10.1016/0022-3093(82)90073-4

Cited by 20 publications

(4 citation statements)

References 2 publications

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“…A broad band with a peak at 1020 nm observed in the optical absorption spectra of W 3 , W 4 and W 5 glasses is due to the excitation of ions from the d xy ground state, assigned with the crystal field parameters D = 16000 cm --1 and d = 13000 cm --1 [21]. Such W 5+ ions may form W 5+ O À 3 molecular orbital states and are expected to participate in the polymerization of the glass network [30,31]. With increase in the concentration of WO 3 , the concentration of W 5+ O À 3 complexes may increase; the increase in intensity of the absorption band at 1020 nm in fact supports this.…”

Section: Optical Absorption Spectramentioning

confidence: 99%

The Effect of Tungsten Ions on the Structure of PbO-As2O3 Glasses

Srinivasarao

Veeraiah

2002

phys. stat. sol. (a)

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Subject classification: 61.43.Fs; 78.30.Ly; S10.15 PbO-As 2 O 3 glasses containing different concentrations of WO 3 (ranging from 0 to 1 mol%) were prepared. A number of studies, namely, differential thermal analysis, IR spectra, optical absorption, ESR, elastic properties (Young's modulus E, shear modulus G and microhardness H) and dielectric properties (dielectric constant e, loss tan d, and ac conductivity s ac , over a range of frequency and temperature and breakdown strength), were carried out on these glasses as a function of tungsten ion concentration. An anomaly has been observed in all the properties of these glasses when the WO 3 concentration is about 0.4 mol%. The studies indicate the presence of W 5+ O À 3 complexes in the glass matrix when the concentration of WO 3 is more than 0.4 mol%. The analysis of results suggests that the stability of the PbO-As 2 O 3 glass network is enhanced if a small concentration of WO 3 (about 0.4 mol%) is present in the glass matrix.

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Section: Optical Absorption Spectramentioning

confidence: 99%

The Effect of Tungsten Ions on the Structure of PbO-As2O3 Glasses

Srinivasarao

Veeraiah

2002

phys. stat. sol. (a)

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“…Among such oxides belong MoO 3 and WO 3 . Phosphate glasses with additions of tungsten oxide or molybdenum oxide offer prospective applications for their electrochromic properties and high ionic conductivity [1,2].…”

Section: Introductionmentioning

confidence: 99%

Structural study of PbO–MoO3–P2O5 glasses by Raman and NMR spectroscopy

Koudelka

Rösslerová

Holubová

et al. 2011

Journal of Non-Crystalline Solids

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“…Phosphate glasses with additions of tungsten oxide or molybdenum oxide offer prospective applications for electro-optical applications due to their electrochromic properties and high ionic conductivity [1,2], and for the formulation of low T g glasses for sealing applications [3]. Moreover, the knowledge of molybdenum phosphate interactions in glasses is useful for the management of radioactive wastes.…”

Section: Introductionmentioning

confidence: 99%