Micromechanical properties of (Na,Zn)-sulfophosphate glasses

Striepe, Simon; Ning, De; Deubener, Joachim; Wondraczek, Lothar

doi:10.1016/j.jnoncrysol.2012.01.045

Cited by 19 publications

(7 citation statements)

References 36 publications

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“…It was previously reported that sulfate anions (SO 4 2− ) may facilitate the depolymerization of metaphosphate chains. 4,13 As for the present glasses, however, the results presented in Figure 5 do not indicate that SO sulfur trioxide into NAPF glasses results in an increase in Poisson ratio, 14 and a reduction in both the glass transition temperature and Young's modulus. 4 If we consider the relatively strong, covalent Al-O-P bond with its bridging oxygen, AlF 3 and SO 3 have the opposite effect on connectivity of the glass network.…”

Section: Napfs Glass Molecular Structurecontrasting

confidence: 62%

Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

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Xia

Buchheim³

et al. 2020

J Am Ceram Soc

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Section: Napfs Glass Molecular Structurecontrasting

confidence: 62%

Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

Calahoo

Xia

Buchheim³

et al. 2020

J Am Ceram Soc

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“…The FTIR spectra are divided into two regions, one in the lower wavenumber from 400 cm -1 to 1700 cm -1 and the other in the higher frequency range 1700 cm -1 -4000 cm -1 . As it is difficult to identify the exact position of the absorption band thus deconvolution of these bands was carried out to obtain the exact position of the absorption band [28]. The deconvolution of 10S90V, 20S80V, 30S70V, 40S60V, and 15S50V base and heat-treated glasses with baseline correction are shown in Fig.…”

Section: Ftir Analysis Of Silicovanadate Glassesmentioning

confidence: 99%

Morphogenesis of Silicovanadate Glasses: Investigation of Physical Properties

et al. 2021

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In this article, we demonstrate the synthesis and various characterizations of silicovanadate glasses of xSiO2 (100-x)V2O5 for x = (10-50) mol%, glasses which are prepared by the melt quenching method. FTIR spectra analysis confirms dominant chemical bonds among silicon, vanadium, and oxygen elements as expected. The assigned chemical bonds are Si-O-Si, O-Si-O, V-O-V, V=O, Si-O-V, O-H from FTIR spectra. The IR spectra of all glass specimens were baseline corrected and deconvoluted to distinct peaks of chemical bonds in overlapped Gaussians with employing computer program. The chemical bond's position shifted and affected due to the addition of vanadium pentaoxide by the heat treatment process. The X-ray diffractions (XRD) patterns of glass samples exhibit partial crystalline nature for 10S90V and 50S50V that is influenced by high-temperature application. The differential thermal analysis (DTA) of base and heat-treated specimen determines the glass transition (Tg), crystallization, and liquidus temperature with prominent exothermic and endothermic reactions. It is seen that the pH of the glass specimens abruptly changes due to the surface effect of V2O5 while bulk effects become robust after about 30 minutes. The measured hardness of three glass samples shows high HV-values and a slight linear increment is observed for higher V2O5 contents. The current-voltage (I-V) characteristic connected to the electrical conductivity of the glass specimen (20S80V) shows a relatively higher and non-linear trend of conductivity which reveals the behavior of a semiconductor. Moreover, temperature-dependent electrical resistivity measurement of the same sample (20S80V) manifests the semiconducting nature up to 427 °C as well.

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“…Aside from cation solubility, phosphate glasses also enable the facile incorporation of secondary anionic species such as sulfate, fluoride, chloride, and nitride ions at high (tens of mol %) concentrations. , The addition of such secondary anionic species has pronounced and sometimes unexpected effects on the structure and properties of the phosphate backbone material . For example, it has been found that the glass-forming ability and corrosion resistance of phosphate glasses can be enhanced significantly through the introduction of sulfate anions (SO 4 2– ), − even though the glass structure was increasingly depolymerized when replacing P 2 O 5 by SO 3 . Similar relationships between glass structure and variations in anion content are of interest for understanding the properties of optically active ions doped into such materials, whereby the variation of anion species offers a range of new ligand configurations as compared to that of conventional phosphate glasses. ,− Furthermore, anion exchange may reduce the phonon energy such as in the prominent fluoride-phosphate (FP) glasses , and may also enhance the transmission window toward the deep blue or ultraviolet (UV) spectral range. ,− …”

Section: Introductionmentioning

confidence: 99%

Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

et al. 2021

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Understanding the interactions among dopant species and the role of the host lattice is of fundamental importance for the chemical formulation of optically active glasses. Here, we consider the archetypal dopant pair of Ag–Ce in complex fluorophosphate (PF) and sulfophosphate (PS) matrices, in which variable bonding environments and ligand selectivity exert distinct effects on dopant properties. The addition of Ag+ to PF glasses blue-shifts the ultraviolet (UV) cutoff wavelength of Ce3+ and enhances its photoluminescence (PL) intensity. In PS matrices, the exact opposite effect is observed: red-shifting the UV cutoff and lowering the PL intensity. No Ag–Ag pairs or cluster species were found in either matrix material; however, in PS, such clustering could be triggered by secondary broad-band UV–visible irradiation. The optical properties of Ag–Ce-codoped glasses are a result of the ionocovalent character of the Ag+–O–Ce3+ bond, the cross-relaxation process between Ag+ and Ce3+, and the redox ratio of Ce3+/Ce4+. In the PF glasses, the enhancement of the Ce3+ PL intensity is due to energy transfer from Ag+ to Ce3+ and a redox shift from Ce4+ to Ce3+. The more covalent Ag+–O–Ce3+ interactions in the PS series decrease the Ce3+/Ce4+ ratio. Moreover, photoinduced Ag clustering is facilitated in the more covalent environment, which indicates that glasses commonly used for Ag nanoparticle formation, such as silicate glasses, also possess more covalent Ag+–O bonding.

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Micromechanical properties of (Na,Zn)-sulfophosphate glasses

Cited by 19 publications

References 36 publications

Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

Morphogenesis of Silicovanadate Glasses: Investigation of Physical Properties

Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

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Micromechanical properties of (Na,Zn)-sulfophosphate glasses

Cited by 19 publications

References 36 publications

Optimization of electrical conductivity in the Na2O‐P2O5‐AlF3‐SO3 glass system

Optimization of electrical conductivity in the Na2O‐P2O5‐AlF3‐SO3 glass system

Morphogenesis of Silicovanadate Glasses: Investigation of Physical Properties

Role of Ag+ Ions in Determining Ce3+ Optical Properties in Fluorophosphate and Sulfophosphate Glasses

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Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

Optimization of electrical conductivity in the Na₂O‐P₂O₅‐AlF₃‐SO₃ glass system

Role of Ag⁺ Ions in Determining Ce³⁺ Optical Properties in Fluorophosphate and Sulfophosphate Glasses