Journal ArticleDOI
Structure and properties of silver phosphate glasses — Infrared and visible spectra
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In this paper, the infrared and visible spectra of glasses in the Ag2OP2O5 glass-forming system were obtained and the partial covalent nature of the Ag-O-P bond was discussed.Abstract:
The infrared and visible spectra of glasses in the Ag2OP2O5 glass-forming system were obtained. The infrared data were interpreted as indicating the presence of polymeric chains in these glasses. The partial covalent nature of the AgOP bond was discussed. A mixed NaPO3AgPO3 glass showed no unexpected bands in the infrared spectrum, again showing that silver is behaving in a manner similar to alkali metal ions in phosphate glasses. The shift in the absorption edge in the visible spectra of glasses of different Ag/P ratio was shown to arise from either an increase in the concentration of nonbridging oxygens with increasing silver content, or the presence of colloidal silver metal particles.read more
Citations
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Journal ArticleDOI
The structure of silicate melts: Implications for chemical and physical properties of natural magma
Journal ArticleDOI
Structural investigations of phosphate glasses: a detailed infrared study of the x(PbO)-(1−x) P2O5 vitreous system
TL;DR: In this article, an extensive experimental study of infrared spectra of the x (PbO)-(1−x)P2O5 vitreous system (x=0.3-0.75) together with a brief review of the spectral properties of phosphate compounds is presented.
Journal ArticleDOI
I. Introduction générale
TL;DR: In this article, plough tillage, reduced tillage and no-till were evaluated regarding their effects on physical, chemical and microbiological soil parameters in an on-farm research approach in two agricultural regions of Algeria (Annaba and Sétif).
Journal ArticleDOI
IR fundamental spectra and structure of pyrophosphate glasses along the 2ZnO·P2O5–2Me2O·P2O5 join (Me being Na and Li)
TL;DR: In this article, the IR reflection spectra of mixed zinc alkali pyrophosphate glasses in the broad frequency ranges were reported and the quantitative treatment of these with a version of the dispersion analysis method was conducted based on the specific analytical model of the complex dielectric constant of glasses.
Journal ArticleDOI
FTIR and XPS studies of low-melting PbO-ZnO-P2O2 glasses
H.S. Liu,T.S. Chin,S.W. Yung +2 more
TL;DR: In this paper, a series of low-melting, water-resistant lead-zinc metaphosphate and polyphosphate glasses were characterized by Fourier transformed infrared (FTIR) spectrophotometer and X-ray photoelectron spectroscopy (XPS).
References
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Journal ArticleDOI
The infra-red spectra of some inorganic phosphorus compounds
D. E. C. Corbridge,E. J. Lowe +1 more
Journal ArticleDOI
The infra-red spectra of inorganic phosphorus compounds. Part II. Some salts of phosphorus oxy-acids
D. E. C. Corbridge,E. J. Lowe +1 more
Journal ArticleDOI
Schwingungsspektren von Schmelzen, Gläsern und Kristallen des Natrium‐di‐, tri‐ und ‐tetraphosphats
W. Bues,H.‐W. Gehrke +1 more
TL;DR: In this article, Schwingungsspektren von Schmelzen and Glasern in System NaPO3−Na4P2O7 were beschrieben and zugeordnet.
Journal ArticleDOI
Vacuum ultraviolet absorption in alkali doped fused silica and silicate glasses
TL;DR: In this article, the absorption and reflectance spectra of several simple silicate glasses of high purity were measured in the region extending from 5 to 14 eV. The data were discussed qualitatively in terms of both molecular orbital and valence bond theories, taking into consideration the increased ionic character of the Si-O bond in the alkali silicate glass.