Induced Silver Centers in Alkali Borate Glasses

Bishay, A.; Boulos, E. N.; Arafa, S.; Assabghy, F.; Kreidl, Norbert J.

doi:10.1007/978-1-4684-3357-9_10

Cited by 13 publications

(18 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…IR spectrum of crystalline Sb 2 O 3 is expected to exhibit four fundamental absorption bands designated by ν 1 (925 cm −1 ) – due to symmetric stretching vibrations, ν 2 (600 cm −1 ) – due to symmetric bending vibrations, ν 3 (710 cm −1 ) – due to doubly degenerate stretching vibrations and ν 4 (485 cm −1 ) – due to doubly degenerate bending vibrations ( ν 4 ) of SbO 3 structural units 30, 31. In the infrared spectrum of glass ceramic sample Mn 1 , the band due to ν 1 vibrations of SbO 3 structural groups is observed at about 939 cm −1 and the band related to ν 2 vibrations of these units is observed at 617 cm −1 .…”

Section: Resultsmentioning

confidence: 99%

“…In the infrared spectrum of glass ceramic sample Mn 1 , the band due to ν 1 vibrations of SbO 3 structural groups is observed at about 939 cm −1 and the band related to ν 2 vibrations of these units is observed at 617 cm −1 . The IR spectrum of crystalline As 2 O 3 is also expected to exhibit four fundamental absorption bands at ν 1 (1050 cm −1 ), ν 2 (618 cm −1 ), ν 3 (795 cm −1 ) and ν 4 (505 cm −1 ) 30. In the spectrum of glass ceramic Mn 1 (Fig.…”

Section: Resultsmentioning

confidence: 99%

“…As 2 O 3 is the only strong network former besides GeO 2 that exhibit significant transmission potential farther into the infrared. This is illustrated by calculated wavelength of λ o , the material dispersion crossover point which is 1.3 µm for P 2 O 5 , B 2 O 3 and SiO 2 , 1.7 µm for GeO 2 and 1.9 µm for As 2 O 3 15, 16. The presence of As 2 O 3 is expected to affect the infrared transmission of Sb 2 O 3 glasses to a less extent, since the frequencies of some of the fundamental modes of vibration of As 2 O 3 structural groups lay in the region of vibrations of SbO 3 structural groups 16.…”

Section: Introductionmentioning

confidence: 95%

“…This is illustrated by calculated wavelength of λ o , the material dispersion crossover point which is 1.3 µm for P 2 O 5 , B 2 O 3 and SiO 2 , 1.7 µm for GeO 2 and 1.9 µm for As 2 O 3 15, 16. The presence of As 2 O 3 is expected to affect the infrared transmission of Sb 2 O 3 glasses to a less extent, since the frequencies of some of the fundamental modes of vibration of As 2 O 3 structural groups lay in the region of vibrations of SbO 3 structural groups 16. In view of this, it is also predicted that AsO 3 groups form a single arsenic–antimony–oxygen framework with the Sb 2 O 3 structural units and may strengthen the glass network.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Padmanabham¹,

Satyanarayana

Gandhi

et al. 2010

Physica Status Solidi (a)

View full text Add to dashboard Cite

PbOSb2O3As2O3 glasses mixed with different concentrations of MnO (ranging from 0 to 5.0 mol%) were crystallized. The samples were characterized by X‐ray diffraction, scanning electron microscopy and differential thermal analysis techniques. Dielectric properties over a range of frequency and temperature, optical absorption, fluorescence IR, ESR and magnetic susceptibility at room temperature have been studied. The X‐ray diffraction studies have revealed the presence of Pb5Sb2O8, PbSb2O6, SbAsO4, Mn2Sb2O7, Mn3Sb2O6, Mn2O3, MnAsO4 and Pb5Sb4O11 crystalline phases in these samples. The DTA studies have indicated the spreading of the crystallization from inside to the surface of the samples as the concentration of the crystallizing agent is increased. The IR studies have pointed out the existence of conventional AsO3 and SbO3 structural units in the glass ceramic samples. These studies have further indicated the decreasing concentration of symmetrical structural vibrational groups with increase in the concentration of MnO. The results of various studies viz., also been reported. The results of optical absorption, ESR, luminescence and magnetic susceptibility studies have been analysed in the light of different oxidation states and environment of manganese ions in the glass ceramic network.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 95%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Padmanabham¹,

Satyanarayana

Gandhi

et al. 2010

Physica Status Solidi (a)

View full text Add to dashboard Cite

show abstract

“…The absorption band that can be seen in the glass matrix between 870-890 cm -1 shows that the bismuth structure is made up from BiO 3 pyramidal[12][13][14][15]. The essential structural change is further confirmed by the appearance of a marked absorption band in the lower wave number region, 460 cm -1 and 480 cm -1 , which is assigned to Bi-O bending vibrations in BiO 6 octahedral units[12][13][14][15]. However, the addition of Na 2 O to the Bi 2 O 3 glass network transforms part of the BiO 6 octahedra into BiO 3 pyramidal units, as revealed by the infra-…”

mentioning

confidence: 99%

Physical properties of unconventional binary sodium bismuthate glasses

Al-Assiri

Tashtoush

Ragab

et al. 2008

Physica Status Solidi (a)

View full text Add to dashboard Cite

Unconventional binary glasses in the system Na2O–Bi2O3 have prepared by a conventional press‐quenching technique. X‐ray diffraction (XRD), scanning electron microscopy (SEM), differential scanning calorimeter (DSC), infrared (IR) spectra, density (ρ) and, molar volume (Vm) and dc conductivity (σ) of these glasses were reported. The overall features of XRD curves confirm the amorphous nature of the present glasses. SEM investigation shows a surface without any microstructure, which is a characteristic of the amorphous phase. Systematic variation of the glass transition temperature (Tg), density and IR spectra observed in these glasses indicates significant structural change with composition. Their variation with the composition has been explained by taking into consideration the structure of these glasses. From IR spectra, we conclude the presence of BiO3 pyramidal and BiO6 octahedral units in the glass structure. From the density (ρ) and molar volume (Vm), the BiO6 octahedral units are transformed into BiO3 pyramidal units because Na+1 are introduced within the network of the glass as a modifier and consequently change the structural units into a more open structure. Tg was observed to decrease with an increase in Na2O content and to lie between 330 °C and 366 °C. The dc conductivity has been explained in terms of the structure of bismuthate glasses. At lower compositions of Na2O, the small variation in conductivity and activation energy has been attributed to the occupancy of Na+ ions at the interstices of BiO6 octahedra, acting as a charge compensator, while at higher concentrations of Na2O, the conductivity increases rapidly due to the formation of weak nonbridging oxygen (NBO) sodium ionic bond. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

show abstract

Luminescence features of Ho³⁺, Er³⁺ and Tm³⁺ ions in red lead added non‐conventional antimony oxide glass system

Rao,

Sekhar,

Kumar

et al. 2023

Luminescence

View full text Add to dashboard Cite

In this study, a glass system based on heavy metal oxides, namely Pb3O4‐Sb2O3‐SiO2, was prepared with Ho2O3, Er2O3, and Tm2O3 as dopants. The prepared glasses were characterized using XRD and IR studies. The luminescence efficiencies of the three rare earth ions viz., Ho3+, Er3+, and Tm3+ in the glass system were investigated, specifically focusing on green (Ho3+, Er3+), blue (Tm3+), and near‐infrared (NIR) emissions. The optical absorption (OA) and photoluminescence (PL) spectra of RE mixed glasses displayed strong bands in the visible and NIR regions, which were analyzed using J‐O theory. The J‐O coefficients (Ωλ) found to be in the order of Ω2 > Ω4 > Ω6 for all the three glasses. Notably, the Tm3+‐doped glasses exhibited the lowest Ω2 value, which was attributed to a larger degree of disorder in the glass network due to lower fractions of Sb5+ and Pb4+ ions that take part glass network forming. Such conclusion was arrived based on the IR studies. Furthermore, the quantitative analysis of PL spectra and decay curves indicated that SbHo and SbEr glasses are suitable for efficient green emission, while SbTm glass is a promising choice for blue laser emission.

show abstract

Induced Silver Centers in Alkali Borate Glasses

Cited by 13 publications

References 11 publications

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Physical properties of unconventional binary sodium bismuthate glasses

Luminescence features of Ho³⁺, Er³⁺ and Tm³⁺ ions in red lead added non‐conventional antimony oxide glass system

Contact Info

Product

Resources

About

Induced Silver Centers in Alkali Borate Glasses

Cited by 13 publications

References 11 publications

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb2O3As2O3:MnO glass ceramics

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb2O3As2O3:MnO glass ceramics

Physical properties of unconventional binary sodium bismuthate glasses

Luminescence features of Ho3+, Er3+ and Tm3+ ions in red lead added non‐conventional antimony oxide glass system

Contact Info

Product

Resources

About

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Microstructural, electrical, magnetic and spectroscopic properties of PbOSb₂O₃As₂O₃:MnO glass ceramics

Luminescence features of Ho³⁺, Er³⁺ and Tm³⁺ ions in red lead added non‐conventional antimony oxide glass system