scholarly journals Correlation among the oxide ion polarizability, optical basicity and interaction parameter in Gd3+ ions doped oxyhalide borate glasses

2021 ◽  
Vol 2070 (1) ◽  
pp. 012050
Author(s):  
G Chandrashekaraiah ◽  
V C Veeranna Gowda ◽  
A Jayasheelan ◽  
C Narayana Reddy ◽  
K J Mallikarjunaiah
Keyword(s):  
Refractive Index ◽  
Interaction Parameter ◽  
Glass Network ◽  
High Refractive Index ◽  
Borate Glasses ◽  
Melt Quenching ◽  
High Basicity ◽  
Quenching Method ◽  
Parameter Values ◽  
Oxide Ion

Abstract A borate glasses doped with rare earth Gd3+ ion in the system [6OB2O3 + 30 L12O + x Gd2O3 + (10-x) BiCl3] is prepared by the conventional melt quenching method and their optical properties have been studied. The oxide ion polarizability parameter is calculating by using refractive index of glass materials, which is obtained from UV-Vis spectra. The borate glasses are known to possess high oxide ion polarizability, high refractive index, high basicity and low interaction parameter values. In this present study, theoretical calculation of basicity and interaction parameter, using oxide ion polarization, of the glass network has been addressed. A good linear correlation between the interaction parameter and basicity is observed.

Structural Studies of Lead Sodium Borate Glasses

2010 ◽  
Vol 93-94 ◽  
pp. 439-442
Author(s):  
Pruittipol Limkitjaroenporn ◽  
Jakrapong Kaewkhao ◽  
Suparat Tuscharoen ◽  
Pichet Limsuwan ◽  
Weerapong Chewpraditkul
Keyword(s):  
Molar Volume ◽  
Glass Network ◽  
Sodium Borate ◽  
Borate Glasses ◽  
Structural Studies ◽  
Melt Quenching ◽  
Network Modifier ◽  
Ir Analysis ◽  
Quenching Method ◽  
Glass Compositions

Glass compositions xPbO : 20Na2O : (80-x)B2O3 (x = 5,10,15,20,25,30,35,40,45,50 and 55 %mol) have been prepared using melt-quenching method. The density and molar volume of these glass samples have been found to be compositional dependent. The results indicate that PbO acts on the glass structures were different between the range 0≤ x ≤ 20 %mol and beyond x = 20 %mol (with inflection at x = 20 %mol). These due to the PbO can enter the glass network both as a network modifier and also as a network former. This role depends on the type of bond between lead and oxide. These results are interpreted in term of IR analysis.

High refractive index La-rich lanthanum borate glasses composed of isolated BO3 units

2019 ◽  
Vol 48 (29) ◽  
pp. 10804-10811 ◽  
Author(s):  
Atsunobu Masuno ◽  
Takashi Iwata ◽  
Yutaka Yanaba ◽  
Shunta Sasaki ◽  
Hiroyuki Inoue ◽  
...  
Keyword(s):  
Refractive Index ◽  
High Refractive Index ◽  
Borate Glasses

The simple environment around the B atom in high refractive index La-rich La2O3–B2O3 glasses caused wide transmittance in the IR region.

Spectroscopic Properties of Rare Earth Ion Doped TeO2-B2O3-PbO Glass

2014 ◽  
Vol 69 (6) ◽  
Author(s):  
A. Noranizah ◽  
K. Azman ◽  
H. Azhan ◽  
E. S. Nurbaisyatul ◽  
A. Mardhiah
Keyword(s):  
Refractive Index ◽  
Rare Earth ◽  
Glass Sample ◽  
Spectroscopic Properties ◽  
Molar Refraction ◽  
Energy Band Gap ◽  
Melt Quenching ◽  
Rare Earth Ion ◽  
Optical Energy Band Gap ◽  
Oxide Ion

This work focuses on the spectroscopic study of RE3+ ion, namely, trivalent neodymium (Nd3+) doped lead borotellurite glass with a composition of TeO2-B2O3-PbO. The glass sample has been prepared by conventional melt-quenching technique. The density, molar volume and optical energy band gap of these glasses have been measured. The refractive index, molar refraction and polarizability of oxide ion have been calculated by using Lorentz-Lorentz relations. The absorption spectra are recorded using UV-Vis-NIR spectrometer in the range of 200-900 nm.

The Polarizability and Optical Characteristics of Zinc Phosphate Glasses Doped Terbium Embedded with Copper Oxide Nanoparticles

2019 ◽  
Vol 290 ◽  
pp. 35-40 ◽  
Author(s):  
Syariffah Nurathirah S. Yaacob ◽  
M.R. Sahar ◽  
E.S. Sazali ◽  
S. Sulhadi
Keyword(s):  
Refractive Index ◽  
Molar Volume ◽  
Zinc Phosphate ◽  
Glass Network ◽  
High Refractive Index ◽  
Copper Oxide Nanoparticles ◽  
Phosphate Glasses ◽  
X Ray Diffraction ◽  
Cuo Nps ◽  
Vis Spectroscopy

Tuning the concentration of nanoparticles (NPs) to accommodate wider application demanded a better understanding of the physicals and structural properties of the glass. A series of zinc phosphate glasses with the composition of (57-x) P2O5- 40ZnO-3Tb2O3 –xCuO, (0 ≤ x ≤ 2 mol %) has been prepared by melt quenching technique and their physical and optical characterization have been studied. The X-Ray Diffraction technique and UV-Vis Spectroscopy have been used to characterize the glass sample. The XRD confirms the amorphous nature of the prepared glasses. The physical properties of glasses with different CuO NPs such as density, molar volume, refractive index and electronic polarizability are determined. It is found that both density and molar volume decreases with increasing CuO NPs concentration. The optical band gap (4.54 eV-2.96 eV) and the Urbach energy (0.19 eV-0.54 eV) are showing a decreasing trend with the increasing amount of CuO NPs.This is due to the formation of non-bridging oxygen, (NBO) in the glass network. The glass exhibits high refractive index ~2.40 and polarizability ~1.12 ×10-23 cm3 and is useful for solid-state laser and optoelectronic devices.

Optical Properties of [(TeO2)0.7 (B2O3)0.3]1-x (Bi2O3)x Glass System

2015 ◽  
Vol 1107 ◽  
pp. 426-431 ◽  
Author(s):  
Azuraida Amat ◽  
Mohamed Kamari Halimah ◽  
Nurazlin Ahmad
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Optical Band Gap ◽  
Urbach Energy ◽  
Glass Composition ◽  
Melt Quenching ◽  
Quenching Temperature ◽  
Glass Forming ◽  
Refractive Index Increase ◽  
Quenching Method

Ternary tellurite based glasses [(TeO2)0.7 (B2O3)0.3]1-x (Bi2O3)x was prepared by melt quenching method with suitable melting and quenching temperature. A series of glasses were selected from 0.05 to 0.30 mol % and its glass-forming region was determined. The density, molar volume and refractive index increase when bismuth ions Bi3+ increase, this is due to the increased polarization of the ions Bi3+ and the enhanced formation of non-bridging oxygen (NBO). The values of optical band gap, Eopt decreases when Bi2O3 content increases. Urbach energy for each composition was also calculated and was found to be dependent on the glass composition.

Spectroscopic Properties of Ho3+ Doped in B2O3-SiO2-SrO-Bi2O3-TiO2 Glasses

2016 ◽  
Vol 675-676 ◽  
pp. 393-396
Author(s):  
Nattapon Srisittipokakun ◽  
Pruek Prongsamrong ◽  
Jakrapong Kaewkhao
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Spectroscopic Properties ◽  
Nominal Composition ◽  
Melt Quenching ◽  
Doped Glasses ◽  
Refractive Index Increase ◽  
Quenching Method

A series of glasses with nominal composition in (53-x)B2O3:11SiO2:34SrO:1Bi2O3:1TiO2: xHo2O3 (BSSBT) where x = 0.0, 0.5, 1.0, 1.5, 2.0 and 2.5 mol% was synthesized by conventional melt quenching method. The as-prepared glasses have been investigated and reported for their physical and optical properties. The results show that, the densities and refractive index increase with increasing Ho2O3 content in the glasses. The absorption peaks of doped glasses were observed at a wavelength of around 420, 460, 480, 540, 640 and 900 nm which are assigned to 5I8 ® 5G5, 5G6, 5F3, (5F4+5S2), 5F5 and 5I5 transitions of Ho3+, respectively.

Electronic-Ionic Conductivity of Lithium- Vanado- Phosphate Glasses

2017 ◽  
Vol 14 (1) ◽  
pp. 9-14
Author(s):  
Eraiah B
Keyword(s):  
Activation Energy ◽  
Ionic Conductivity ◽  
Structural Changes ◽  
Glass Network ◽  
Phosphate Glasses ◽  
Melt Quenching ◽  
Calculated Activation Energy ◽  
Quenching Method ◽  
Increasing Temperature ◽  
Calculated Activation

The new glassesof glass system x Li 2 O-50 V 2 O 5 -(50-x) P 2 O 5 were prepared by using conventional melt quenching method. The densities of these glasses have been measured by Archimedes method and corresponding molar volumes have also been calculated. The conductivity of these glasses was measured as a function of temperature and composition. The variations of conductivity versus temperature follow Arrehenius type relationship. Conductivity decreases with increasing Li 2 O content and increase with increasing temperature. The calculated activation energy decreases up to 15mol% of Li 2 O, it increases from 15mol% to 30 mol% of Li 2 O and again it suddenly drops at 40 mol% of Li 2 O. This may be due to structural changes in glass network and these glasses exhibit both electronic and ionic conductivity.

scholarly journals Optical Properties of Erbium Doped Borotellurite Glass System

2015 ◽  
Vol 1112 ◽  
pp. 7-10 ◽  
Author(s):  
Mohamed Kamari Halimah ◽  
M.N. Azlan ◽  
S.Z. Shafinas
Keyword(s):  
Refractive Index ◽  
Optical Properties ◽  
Molar Volume ◽  
X Ray Diffraction ◽  
Melt Quenching ◽  
X Ray ◽  
Erbium Doped ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Method

Erbium doped zinc borotellurite glasses were prepared by using melt-quenching method. The structural properties of the glass samples were determined by using x-ray diffraction (XRD) method and was confirmed its amorphous nature. The density and molar volume is shown to be increased with increasing content of erbium. The refractive index is found to be increased with increasing content of erbium.

NIR Luminescence and Spectroscopic Studies of Nd3+ Doped Lutetium Calcium Silico Borate Glasses

2017 ◽  
Vol 728 ◽  
pp. 137-142
Author(s):  
Keerati Kirdsiri ◽  
Jakrapong Kaewkhao
Keyword(s):  
Refractive Index ◽  
Optical Absorption ◽  
Near Infrared ◽  
Spectroscopic Studies ◽  
Luminescence Spectra ◽  
Borate Glasses ◽  
Optical Absorption Spectra ◽  
Melt Quenching ◽  
Refractive Index Increase ◽  
Nir Luminescence

Lutetuim calcium silico borates (LuCaSiB) glasses doped with Nd3+ ions with molar composition of Lu2O3-CaO-SiO2-B2O3-Nd2O3 have been prepared by conventional melt quenching technique. Their properties have been evaluated throughout the density, refractive index, absorption and emission measurements. The density, molar volume and refractive index increase with increasing Nd2O3 concentration. The optical absorption spectra show twelve bands in visible and near infrared regions. The luminescence spectra exhibit three emission bands were observed at 900, 1072 and 1341 nm corresponding to 4F3/2 → 4I9/2, 4I11/2 and 4I13/2 transition respectively.

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