scholarly journals Structural and Optical Properties of Nd3+ Doped Na2O-PbO-ZnO-Li2O-B2O3 Glasses System

2016 ◽  
Vol 675-676 ◽  
pp. 424-429 ◽  
Author(s):  
Juniastel Rajagukguk ◽  
Rahmat Hidayat ◽  
Suprijadi ◽  
Mitra Djamal ◽  
Y. Ruangtaweep ◽  
...  
Keyword(s):  
Borate Glass ◽  
Structural And Optical Properties ◽  
Ion Content ◽  
Melt Quenching ◽  
Hypersensitive Transition ◽  
Amorphous Nature ◽  
Measured Absorption ◽  
Lead Zinc ◽  
Lithium Borate Glass ◽  
Quenching Method

The present paper reports the structural (XRD and FTIR spectra), physical (like density, molar volume, refractive index etc.), optical absorption and emission properties of Nd3+ doped sodium lead zinc lithium borate glass. The glasses with chemical formula (65-x)B2O3-15Na2O-10PbO-5ZnO-5Li2O-xNd2O3 (where x = 0, 0.05, 0.1, 0.5, 1.0, 2.0 and 4.0) have been prepared using the melt-quenching method. XRD characterization shows that the glasses are amorphous nature. The values of measured absorption transitions obtained ten transitions and the hypersensitive transition at 4I9/2 → 2G7/2+4G5/2. To excite photon from ground state to upper state, used two different wavelength spectra at 582 and 804 nm. The maximum emission intensity of the 4F3/2 → 4I11/2 transition obtained when Nd3+ ion content in the borate glass is 1.0 mol %. It is indicating that Nd3+ doped borate glass have self-quenching or concentration quenching.

Influence of Eu3+ on Physical and Thermal Properties of Borotellurite Glass Containing Manganese Oxides Nanoparticles

2017 ◽  
Vol 268 ◽  
pp. 124-127
Author(s):  
Md Rahim Sahar ◽  
Siti Maisarah Aziz ◽  
K. Sulhadi
Keyword(s):  
Thermal Analysis ◽  
Differential Thermal Analysis ◽  
Thermal Properties ◽  
Manganese Oxides ◽  
Melt Quenching ◽  
Xrd Pattern ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Europium Concentration ◽  
Manganese Nanoparticles

The influence of the europium concentration on the physical and thermal properties of manganese nanoparticles (Mn3O4 NPs) ) embedded borotellurite glass are studied. Glasses with composition (59-x)TeO2-30B2O3-10MgO-xEu2O3-1Mn3O4 (where x = 0.5, 1.0 and 1.5 mol%) are prepared by melt-quenching method and characterized using XRD and Differential Thermal Analysis (DTA). The XRD pattern confirms the amorphous nature of all samples.The physical properties such as density (ρ) and molar volume (Vm) are calculated. The thermal properties of borotellurite glasses show that the glass with 1.0 mol % of Eu2O3 possess the highest stability.

Structural and Thermal Characterization of Antimony-Phosphate Glass

2017 ◽  
Vol 268 ◽  
pp. 33-37
Author(s):  
S.Y. Moustafa ◽  
Md Rahim Sahar ◽  
Sib Krishna Ghoshal
Keyword(s):  
Thermal Characterization ◽  
Melt Quenching ◽  
Sem Images ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Patterns ◽  
New Research ◽  
Antimony Phosphate ◽  
Approximate Percentage

A new ternary glass systems of composition xSb2O3-(75-x) P2O5-25MgO, where x = 30, 40, 50 mol%; has been prepared via melt-quenching method. Synthesized glasses are characterized using XRD, FESEM, EDX, and TG/DTA measurements. The influence of varying Sb2O3 concentrations on their thermal properties and crystal structure is evaluated. The XRD patterns confirmed the amorphous nature of samples. SEM images demonstrated interesting phase formation with ribbons-like texture. Three crystalline phases were observed in this glass series which are antimony phosphate, antimony orthophosphate and cervantite. EDX spectra detected the approximate percentage of the raw elemental traces. Thermal analysis of these glasses revealed their high-molecular polymer character for Sb2O3 content at 50 mol%. Three different glass transition temperatures are achieved with three different composition each, which are (276, 381, 422 °C) at x=30 mol%, (276, 381, 470 °C) at x=40 mol% and (276, 381, 443 °C) at x=50 mol%. Furthermore, the solidus and liquidus temperature are found to decrease with increasing Sb2O3. This observation may open up new research avenues for antimony based ternary glasses.

Structural and Optical Properties of Ho3+ Doped ZnO-Bi2O3-B2O3 Glasses

2014 ◽  
Vol 979 ◽  
pp. 98-101 ◽  
Author(s):  
Parnuwat Chimalawong ◽  
Keerati Kirdsiri ◽  
Jakrapong Kaewkhao ◽  
Pichet Limsuwan
Keyword(s):  
Molar Volume ◽  
Ground State ◽  
Borate Glass ◽  
Borate Glasses ◽  
Structural And Optical Properties ◽  
Melt Quenching ◽  
Bismuth Borate ◽  
Doped Zno ◽  
Bismuth Borate Glass

Ho3+ doped zinc bismuth borate glasses of the composition 10ZnO : 30Bi2O3 : (60-x)B2O3 : xHo2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8 and 1.0 mol%) were fabricated by conventional melt quenching technique. In order to understand the role of Ho2O3 in these glasses, the density, molar volume and optical spectra were investigated. The molar volume decreases with an increase in Ho2O3 content, which is attributed to the structure becomes more compacted. The absorption spectra of Ho3+ doped in zinc bismuth borate glass correspond to several bands, which are assigned from the ground state, 5I8 to 5G5 (420 nm), 5G6 + 5F1 (451 nm), 5F2 + 5F4 (538 nm), 5F5 (643 nm) and 5I5 (1152 nm). Moreover, the optical basicities were also theoretically determined.

The Thermoluminescence Response of Dy Doped Calcium Borate Glass Subjected to 6MV Photon Irradiation

2014 ◽  
Vol 895 ◽  
pp. 390-394 ◽  
Author(s):  
Hamiza Ahmad Tajuddin ◽  
Husin Wagiran ◽  
Rosli Hussin
Keyword(s):  
Dose Response ◽  
Borate Glass ◽  
Glass Sample ◽  
Dopant Concentration ◽  
Response Relationship ◽  
Dose Response Relationship ◽  
Melt Quenching ◽  
Photon Irradiation ◽  
Linear Dose ◽  
Quenching Method

This paper presents the thermoluminescence (TL) response and sensitivity of various dopant concentration of Dy into borate glass. Borates glass present absorption coefficient that closely to human bone and teeth. This fact makes borate as an ideal material for TL material either for medical or environmental dosimeter. Therefore, a series of glasses based on xCaO-(100-x)B2O3system (0 x 100) % weight has been prepared by using melt quenching method. In this research, Dy doped (0.01-0.4) mol% to 30CaO-70B2O3glass sample were studied to investigate the TL properties in terms of dose-response relationship and sensitivity. Samples were irradiated to various doses range 0.5-4.0 Gy subjected to 6 MV photon irradiation by using LINAC Primus MLC 3339. The TL intensity of various dopant concentration were studied and it was founds that the 0.3 mol% Dy has the highest TL response and has linear dose response relationship. The highest sensitivity was calculated as 58 nC.mg-1.Gy-1for 0.3 mol% Dy concentration.

Physical and Structural Properties of Dysprosium Doped Barium Borate Glass

2019 ◽  
Vol 290 ◽  
pp. 46-52 ◽  
Author(s):  
Norihan Yahya ◽  
Mardhiah Abdullah ◽  
Mohamed Najmi Naquib Mohamed Zainal Abidin ◽  
Azman Kasim ◽  
Azhan Hashim
Keyword(s):  
Molar Volume ◽  
Structural Properties ◽  
Borate Glass ◽  
Glass Network ◽  
Barium Borate ◽  
X Ray Diffraction ◽  
Melt Quenching ◽  
X Ray ◽  
Amorphous Nature ◽  
Barium Borate Glass

Five distinguish glass samples were prepared by melt quenching technique of the composition (81-x)H3BO3-19BaCO3-xDy2O3 with x = 0, 0.2, 0.4, 0.6 and 0.8 mol%. The effect of Dy3+ to the barium borate glass can be investigated in terms of their physical properties such as density, molar volume and oxygen packing density. The structural properties were analyzed by X-Ray Diffraction (XRD) technique and Fourier Transform Infrared Spectroscopy (FTIR). The result revealed that the increment of mol% of Dy3+ in the compound generally will increases the density and molar volume of the glass samples. The amorphous nature of the glass system was verified from the XRD spectra pattern. Meanwhile, the FTIR spectra shown the presence of Ba2+, BO3, BO4, B-O-B linkage, H-O-H and isolated borate in the glass network.

Influence of Samarium on the Optical Response of Zinc Phosphate Glass

2015 ◽  
Vol 1107 ◽  
pp. 403-408 ◽  
Author(s):  
Siti Amlah Mohamad Azmi ◽  
M.R. Sahar ◽  
Ramli Arifin ◽  
Sib Krishna Ghoshal
Keyword(s):  
Excited States ◽  
Zinc Phosphate ◽  
Rapid Quenching ◽  
Phosphate Glasses ◽  
Relaxation Processes ◽  
Melt Quenching ◽  
Zinc Phosphate Glass ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Patterns

Samarium doped zinc phosphate glasses of the form 40ZnO-(60-x) P2O5-xSm2O3, with 1.0 ≤ x ≤ 5.0 mol% were prepared using the melt quenching method. The XRD patterns confirmed the amorphous nature of the glass. The Archimedes method was used to measure the density, which was used to calculate the molar volumes. The density was found to vary in the range of 2.839 to 3.138 gm/cm3 while the molar volume varied between 40.80 and 42.21cm3/mol. The effect of samarium on the optical absorption and emission characteristics were examined. The absorption spectra exhibit two dominant absorption peaks corresponding to the transitions from 6H5/2 ground state to 4I11/2 and 4F7/2 excited states, respectively. Photoluminescence emission consisting of 4G5/2 à 6H5/2, 6H7/2, 6H9/2 and 6H11/2 transitions display significant enhancement with the increase of Sm3+ concentration up to 3.0 mol% followed by a rapid quenching beyond this concentration which is ascribed to the nonradiative energy transfer and multi-phonon relaxation processes.

scholarly journals Effect of Vanadium on Structural and Optical Properties of Borate Glasses Containing Er3+ and Silver Nanoparticles

2021 ◽  
Author(s):  
Nur Adyani Zaini ◽  
Syafawati Nadiah Mohamed ◽  
Zakiah Mohamed
Keyword(s):  
Optical Properties ◽  
Optical Band Gap ◽  
Urbach Energy ◽  
Structural And Optical Properties ◽  
Intensity Parameter ◽  
Vanadium Concentration ◽  
Prepared Glass ◽  
Amorphous Nature ◽  
Quenching Method ◽  
Xrd Patterns

Glass samples (59.5 – x) B2O3 – 20Na2O – 20CaO – xV2O5 – Er2O3 – 0.5AgCl (x = 0 – 2.5 mol%) were prepared using melt – quenching method to investigate the structural and optical properties of the glass. The structural of the glass were characterized by using XRD, TEM and FTIR, meanwhile the optical properties were characterized by UV – VIS absorption. The XRD patterns confirmed the amorphous nature of the prepared glass samples. FTIR confirmed the presence of VO4, VO5, BO3, and BO4 vibration, and this result showed NBO increased with increasing vanadium concentration. The UV – Vis – NIR spectra exhibits six absorption band centered at 490, 520, 540, 660, 800, and 980 nm. The optical band gap (Eopt), Urbach energy and refractive index shown decrease, increase and increase, respectively. The Judd – Ofelt intensity parameter reveal the trends was Ω2 > Ω4 > Ω6. There are three emission bands at 516 nm, 580 nm, and 673 nm which are represented by 2H11/2 – 4I15/2, 4S3/2 – 4I15/2, and 4F15/2 – 4I15/2, respectively under 800 nm excitation was obtained.

scholarly journals Green Emission of Tellurite Based Glass Containing Erbium Oxide Nanoparticles

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Azlan Muhammad Noorazlan ◽  
Halimah Mohamed Kamari ◽  
Sharudin Omar Baki ◽  
Daud W. Mohamad
Keyword(s):  
Excited States ◽  
Green Emission ◽  
Ftir Analysis ◽  
Erbium Oxide ◽  
Structural And Optical Properties ◽  
Melt Quenching ◽  
Intensity Parameters ◽  
Quenching Method ◽  
Broad Green Emission ◽  
Xrd Method

Investigation on green emission and spectral intensity of tellurite based glass containing erbium oxide NPs is one of the crucial issues. Tellurite based glass containing erbium oxide NPs with the composition of{[(TeO2)0.70(B2O3)0.30]0.7(ZnO)0.3}0.95(Er2O3)0.05has been prepared by using conventional melt-quenching method. The structural and optical properties of the glass sample were characterized by using XRD, FTIR, UV-Vis absorption, and PL spectroscopy. The amorphous structural arrangement was proved through XRD method. The formation of TeO3and BO3units was revealed by FTIR analysis. Five transition states of excitation were shown in UV-Vis spectra which arise from the ground state4I15/2to the excited states4G11/2+2H9/2+4F5/2+4F7/2+2H11/2+4S3/2+4F9/2+4I9/2+4I11/2. The intensity parametersΩt(t=2, 4, 6) are calculated and follow the trend ofΩ2>Ω4>Ω6. Broad green emission at 559 nm under 385 nm excitation was obtained.

Luminescence Properties of Dy3+ and Sm3+: Potassium Lithium Borate Glass

2014 ◽  
Vol 68 (1) ◽  
Author(s):  
Haydar Aboud ◽  
H. Wagiran ◽  
R. Hussin
Keyword(s):  
Borate Glass ◽  
Diffraction Method ◽  
Light Sources ◽  
X Ray Diffraction ◽  
Optical Fields ◽  
Hypersensitive Transition ◽  
X Ray ◽  
Uv Absorption Spectra ◽  
Lithium Borate Glass ◽  
Visible Lasers

The present paper describes the spectral properties of Sm3+ (0.4 mol%) and Dy3+ (0.4 mol%) ions-doped 20Li2O–10K2O–70B2O3 glasses. X-ray diffraction method was use to confirm the amorphous phase of samples. The physical properties have been determined based on UV absorption spectra. The hypersensitive transition of Dy3+ and Sm3+ is found due to transition of (6F11/2,6H9/2) and (6F7/2), respectively. The emission bands of Dy3+: glass has shown around 572 nm, 612 nm and 646 nm; these emissions are attributed to the transitions of 4F9/2 ®6H15/2 (yellow), 4F9/2 - 6H13/2 (red) and 4F9/2 -6H11/2 (red). With regard to Sm3+: glass has three emission bands those have been generated from 4G5/2 ® 6H5/2 (616 nm), 4G5/2 ® 6H 7/2 (660 nm) and 4G5/2 ® 6H9/2 (719 nm) transitions. The current results promise several applications in optical fields such as UV-sensor, developing new color light sources and tunable visible lasers.

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