Constitution of Soluble Phosphate Glasses

Westman, A. E. R.; Crowther, Joan

doi:10.1111/j.1151-2916.1954.tb14061.x

Cited by 80 publications

(11 citation statements)

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“…In the earlier studies, analytical techniques such as paper chromatography [9][10][11][12][13][14] were used for structural anal ysis; however, recent techniques such as Raman spec troscopy, infrared (IR) spectroscopy, and nuclear magnetic resonance (NMR) spectroscopy are being used as effective investigative tools to analyze the glass structure [15][16][17][18][19]. These analytical techniques have helped in concluding that the basic structure of phos phate glass includes nonbridging oxygens (NBO) and PO 4 tetrahedra [18][19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

Effect of ZnO content change on the structure and properties of zinc borophosphate glasses

2014

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The glass system xZnO-10B 2 O 3 -(100 -x)P 2 O 5 was prepared by cooling using the melt quench ing technique in the composition series x from 30 to 60 mol %. The density, thermal expansion coefficient, glass transition temperature, and softening temperature of the glass system were determined. Structural char acterization was performed by using a combination of IR and Raman spectroscopy and 11 B/ 31 P solid state NMR spectroscopy data. In particular, variations in the phosphate network structure upon the addition of ZnO were investigated. Data analysis indicated that increasing the ZnO content and decreasing the P 2 O 5 content increased the extent of cross linking between the phosphate and borate units in the glass network; this was because incorporation of ZnO polyhedra into the structural network of ZnO increased the network dimensionality. These structural changes were confirmed by Raman and IR spectroscopy.

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Section: Introductionmentioning

confidence: 99%

Effect of ZnO content change on the structure and properties of zinc borophosphate glasses

2014

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“…Proportion W, of phosphorus present in chains of length n in a phosphate glass having the composition Na,PsOza [26] (cf. also [251 and [27]).…”

Section: Glasses Formed By Mixtures Of Differently Shaped Moleculesmentioning

confidence: 99%

The Structure of Glasses

Krebs

1966

Angew. Chem. Int. Ed. Engl.

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the oxidizing power [m+1291 appear unlikely. The oxidizing power and the catalytic activity may be due to defects in the structure, i.e. in the coordination of the metal ions in the oxides 11321. Different types of reactions are evidently catalysed by different active sites; thus the addition of alkali, which suppresses the catalysis of one reaction, often has relatively little influence on another [87,1331. Cracking processes may proceed via carboni- 11321A melt can readily solidifv to a glass with a three-dimensional or two-dimensional network, or a chain structure, provided that an irregular bonding system can be formed by virtue of free rotation about the bonds between a central atom and the ligands which function as bridging atoms. Such an irregular structure can arise when the system contains a sufficient amount of bridging atoms such as 0, F, and S, or bridging groups such as CH2, with bond angles less than 180 O. When the network is formed predominantly by trivalent and tetravalent elements, such as As and Ge, the glasses ~ though they cannot be prepared by cooling of meltscan be obtained by other processes, e.g. by condensing the vaporized substances onto a surface (glasses in the wider sense of the word). As a result of extensive network formation, the bonding system and, therefore, the short-range order of the atomic arrangement in the melt difSer from those in the glass or the crystal. A liquid mixture of substances having unlike molecular size and shape also can form a glass on solidiJication. Moreover, glasses can be formed even when the system contains only one component opposing regular packing into a crystal lattice.

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“…They are characterized by a low melting point and the absence of hygroscopic properties, and hence tellurite glasses have limited the application of phosphate and borate glasses and aroused widespread interest in the field of photonics and associated technologies. Moreover, they have high density and a low transition temperature [7,8]. Their optical properties include relatively high refractive index, high nonlinear refractive index, high dielectric constant, as well as good chemical stability and a wide infrared (IR) transmission range (1-6 μm) [9][10][11].…”

Section: Introduction Of Tellurite Glassmentioning

confidence: 99%

Tellurite Glass and Its Application in Lasers

Wang¹,

Jia²,

Lu³

et al. 2020

Advanced Functional Materials

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This chapter provides expert coverage of the physical properties of new noncrystalline solids-tellurite glass and the latest laser applications of the material-offering insights into innovative applications for laser and sensing devices, among others. In particular, there is a focus on specialty optical fibers, supercontinuum generation and laser devices, and luminescence properties for laser applications. This chapter also addresses the fabrication and optical properties and uses of tellurite glasses in optical fibers and optical microcavities, the significance of from near infrared (NIR) to mid-infrared (MIR) emissions and the development of tellurite glass-based microcavity lasers. The important attributes of these tellurite glasses and their applications in lasers were discussed in this chapter.

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Constitution of Soluble Phosphate Glasses

Cited by 80 publications

References 3 publications

Effect of ZnO content change on the structure and properties of zinc borophosphate glasses

Effect of ZnO content change on the structure and properties of zinc borophosphate glasses

The Structure of Glasses

Tellurite Glass and Its Application in Lasers

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