Synthesis and physical characterization of amorphous silicates in the system SiO2-Na2O– RO (R = Zn, Pb or Cd)

Morsi, Reham M.M.; Basha, Mohammad Ahmad-Fouad

doi:10.1016/j.jnoncrysol.2016.02.018

Cited by 40 publications

(8 citation statements)

References 52 publications

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“…The transformation process from BO3 to BO4 improves the glasses' consistency. This results in an increase in the coherence of the glass network and the structure stiffening [20][21][22][23][24][25][26][27][28][29][30][31][32].…”

Section: Ft-ir Studiesmentioning

confidence: 99%

“…The vibrations of specific groups of atoms in glass maintained by the vibrations of other atoms. The FT-IR of bismuth titanate borosilicate containing varying amount of Y2O3 disclose 3 different bands [20][21][22][23][24][25][26][27][28][29][30][31][32]. The band at ~ 680 cm -1 assigned to the bending vibrations of the B-O-B linkage in the borate network, the band 800-1200 cm -1 to the stretching of the B-O bonds in BO4 units, and the bands at 1200-1600 cm -1 to the asymmetric stretching relaxation of the B-O bonds in the trigonal BO3 units.…”

Section: Ft-ir Studiesmentioning

confidence: 99%

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Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

Shaaban¹

2021

Preprint

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Glasses with the chemical composition of 52B2O3 – 12SiO2- 26Bi2O3 – (10-x)TiO2 -xY2O3, :(0 ≤ x ≥10)prepared using the melt-quench method. The goal of this study is to investigate the structural, thermal, and crystallization characteristics of these samples. XRD analysis has explored the nature of the glass system. Molar volume obtained reduced while the density denotes increased in the present system. FTIR analysis revealed that as Y2O3 replaced by TiO2, because of an increasing trend in bridging oxygens (BOs), structural units and interconnection of modifier oxide tetrahedral increment, while non-bridging oxygens (NBOs) reduce. These glasses' thermal stability investigated using DTA. As the concentration of Y2O3 increased, so the thermal parameter values. The glass-ceramic denoted prepared under controlled heat and investigated using XRD & SEM. Ultrasonic velocities and elastic moduli of glass-ceramic samples increase as internal energy increases. The significance of Y2O3 modifier in the glass system signifies proved. Y2O3 is a powerful nucleating agent that can cause crystallization, assisting in the formation of glass-ceramic phases.

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Section: Ft-ir Studiesmentioning

confidence: 99%

Section: Ft-ir Studiesmentioning

confidence: 99%

Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

Shaaban¹

2021

Preprint

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“…Son yıllarda ZnO içeren camlar, çeşitli teknolojik alanlardaki kullanımlarından dolayı dikkat çekmektedir (Morsi et al 2016). Özellikle, yüksek oranda ZnO içeren silikat camlar şeffaf dielektrik katmanlar ve plazma ekran panallerindeki teknik uygulamaları ile öne çıkmaktadır (Busio and Steigelmann 2000).…”

Section: Afyon Kocatepe üNiversitesi Fen Ve Mühendislik Bilimleri Derunclassified

“…Oda sıcaklığında 3,3 eV'luk geniş bant aralığına sahip olmasından dolayı güneş hücreleri ve optoelektronik uygulamalarda sıklıkla kullanılır (Ding et al 2008). Son yıllarda ZnO içeren camlar, çeşitli teknolojik alanlardaki kullanımlarından dolayı dikkat çekmektedir (Morsi et al 2016). Özellikle, yüksek oranda ZnO içeren silikat camlar şeffaf dielektrik katmanlar ve plazma ekran panallerindeki teknik uygulamaları ile öne çıkmaktadır (Busio and Steigelmann 2000).…”

Section: Introductionunclassified

The Effect of ZnO Doping Amount on the Electrical and Optical Properties of TiO2-CaO-Al2O3-Na2O-SiO2 Glass Structure

Colak¹,

Akyüz²,

Atay³

2017

AKU-J. Sci. Eng.

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ÖzetBu çalışmada, klasik erime-söndürme tekniği ile 1TiO 2 -3CaO-1Al 2 O 3 -25Na 2 O-(70-x)SiO 2 : xZnO (x= 0, 5, 10, 15 % ağırlık) yapısında dört adet cam yapısı hazırlanmıştır. Üretilen bu camların elektriksel ve optik özelliklerinin incelenmesi amaçlanmıştır. İletim mekanizmalarını araştırmak için sıcaklığa bağlı elektriksel ölçümleri alınmış ve klasik Arrhenius bağıntısı ile aktivasyon enerjileri saptanmıştır. Üretilen cam yapıların soğurma spektrumları kullanılarak optik bant aralıkları hesaplanmıştır. Ayrıca, spektroskopik elipsometri tekniği kullanılarak numunelerin kırılma indisi ve sönüm katsayısı değerleri belirlenmiştir. Alınan ölçümler sonucunda, cam yapısına eklenen ZnO miktarı arttıkça aktivasyon enerjilerinin genelde arttığı, kırılma indisi değerlerinin azaldığı ve geçirgenlik değerlerinin arttığı gözlenmiştir. Özellikle %15 ZnO içeren silikat cam yapısının görünür bölgedeki geçirgenliği %95'e ulaşmıştır. The Effect of ZnO Doping Amount on the Electrical and Optical Properties of TiO AbstractIn this study, four glass structures of the composition 1TiO 2 -3CaO-1Al 2 O 3 -25Na 2 O-(70-x)SiO 2 : xZnO (x= 0, 5, 10, 15, weight %) were prepared by the melting quenching technique. It is aimed to investigate the electrical and optical properties of these glasses. Temperature dependent electrical measurements were carried out to analyzed the conduction mechanisms and activation energies determined by classical Arrhenius relation. Optical band gap values were calculated using absorption spectrums of prepared glass structures. Also, refractive index and extinction coefficient values of samples were determined by using Spectroscopic Ellipsometry (SE) technique. As a result of measurements, it is observed that the activation energy generally increases, the refractive index decreases, and the transmittance value increases by the increase of the ZnO amount. Especially, the transmittance of the silicate glass structure with 15% ZnO content has been reached to 95% in the visible region.

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“…The PbO‐Na 2 O‐SiO 2 glasses are of particular interest because of their importance as a fundamental model system for multicomponent Pb‐bearing silicate glasses, as well as their industrial applications (e.g., radiation shielding glasses 42,43 ). Several studies have examined the properties of PbO‐Na 2 O‐SiO 2 glasses, such as electrical conductivity, 44,45 optical band gap, 44 photoluminescence, 46 crystallization behavior, 47 and chemical durability 48 . Earlier spectroscopic studies (e.g., Raman, 49 XPS, 31 FT‐IR, 45,49 and 29 Si NMR 45,46 ) of PbO‐Na 2 O‐SiO 2 glasses have suggested that the Si (and Pb) coordination environments and their topological variations vary with composition.…”

Section: Introductionmentioning

confidence: 99%

Structure and disorder in Pb‐Na metasilicate (PbO:Na₂O:2SiO₂) glasses: A view from high‐resolution ¹⁷O solid‐state NMR

et al. 2020

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Knowledge of the structure of lead (Pb)-bearing silicate glasses, such as degree of polymerization and arrangement among cations, provides improved prospects for understanding their macroscopic properties. Despite the importance, the detailed disorder in Pb-bearing silicate glasses with varying composition (i.e., Pb/alkali content) has not been systematically explored. Here, we reveal the first unambiguous structural information of PbO-Na 2 O-SiO 2 glasses with varying PbO content [i.e., X PbO = PbO/(Na 2 O + PbO)], which are the fundamental model system for multicomponent Pb-bearing glasses, using high-resolution 17 O solid-state NMR. 17 O NMR spectra clearly show the resolved multiple oxygen sites, such as Na-O-Si, Si-O-Si, and [Na,Pb]-O-Si. As X PbO increases, the fraction of [Na,Pb]-O-Si peak increases markedly at the expanse of substantial reduction in the fraction of Na-O-Si/ total NBO. This trend indicates the relative predominance of the dissimilar pairs around non-bridging oxygen (NBO) and, therefore, can be explained well with the pronounced chemical ordering among Na + and Pb 2+. These results confirm that Pb is primarily a network-modifier in the glasses studied here. Atomic environments around both NBO and BO are affected by the change in Na/Pb ratio, while topological disorder due to cation mixing around NBO is much more prominent in Pb endmember. The structural details of short-range configurations around oxygen in alkali Pb-silicate glasses provide atomistic insights for understanding the properties of Pb-bearing multicomponent silicate glasses.

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Synthesis and physical characterization of amorphous silicates in the system SiO2-Na2O– RO (R = Zn, Pb or Cd)

Cited by 40 publications

References 52 publications

Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

The Effect of ZnO Doping Amount on the Electrical and Optical Properties of TiO2-CaO-Al2O3-Na2O-SiO2 Glass Structure

Structure and disorder in Pb‐Na metasilicate (PbO:Na₂O:2SiO₂) glasses: A view from high‐resolution ¹⁷O solid‐state NMR

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Synthesis and physical characterization of amorphous silicates in the system SiO2-Na2O– RO (R = Zn, Pb or Cd)

Cited by 40 publications

References 52 publications

Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

Tunning the Crystallization Behavior of B2O3 – SiO2 – Bi2O3 – TiO2 – Y2O3 Glasses

The Effect of ZnO Doping Amount on the Electrical and Optical Properties of TiO2-CaO-Al2O3-Na2O-SiO2 Glass Structure

Structure and disorder in Pb‐Na metasilicate (PbO:Na2O:2SiO2) glasses: A view from high‐resolution 17O solid‐state NMR

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Structure and disorder in Pb‐Na metasilicate (PbO:Na₂O:2SiO₂) glasses: A view from high‐resolution ¹⁷O solid‐state NMR