scholarly journals Thermal stability and Judd-Ofelt analysis of optical properties of Sm3+-doped sodium tellurite glasses

2017 ◽  
Author(s):  
Saman Q. Mawlud ◽  
Mudhafar M. Ameena ◽  
Md. Rahim Sahar ◽  
Zahra A. Said Mahraz ◽  
Kasim Fawzy Ahmed
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses ◽  
Sodium Tellurite

Thermal stability and Judd-Ofelt analysis of optical properties of Er3+-doped tellurite glasses

2012 ◽  
Vol 22 (8) ◽  
pp. 2021-2026 ◽  
Author(s):  
Fang REN ◽  
Yu-zhao MEI ◽  
Chao GAO ◽  
Li-gang ZHU ◽  
An-xian LU
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses

Thermal Stability and Optical Properties of Tellurite Glasses Doped with Rare Earth Containing Lithium Chloride

2019 ◽  
Vol 14 (4) ◽  
pp. 448-455
Author(s):  
Y. M. AbouDeif ◽  
M. Reben ◽  
El Sayed Yousef ◽  
A. E. Al-Salami ◽  
Alya S. Al Shehri
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Rare Earth ◽  
Lithium Chloride ◽  
Tellurite Glasses

The Influence of Yb3+ Co-Doping on Optical Properties of Sm3+-Doped Sodium Tellurite Glasses

2014 ◽  
Vol 895 ◽  
pp. 359-362
Author(s):  
Fakhra Nawaz ◽  
Muhammad Rahim Sahar ◽  
Sib Krishna Ghoshal
Keyword(s):  
Optical Properties ◽  
Nir Spectroscopy ◽  
Band Gap Energy ◽  
Oscillator Strengths ◽  
Tellurite Glasses ◽  
X Rays ◽  
Broad Absorption Band ◽  
Co Doping ◽  
Sodium Tellurite

A series of Sm3+-doped sodium tellurite glasses co-doped with Yb3+were synthesized by melt quenching technique. The amorphous nature of the glasses was confirmed by X-Rays diffraction technique. From UV-Vis-NIR spectroscopy, eight absorption peaks of Sm3+ions are observed. The broad absorption band in the range of ~870-1100 nm corresponds to the superposition of Sm3+:6H5/26F11/2and Yb3+:2F7/22F5/2transitions. The experimental and theoretical oscillator strengths of these bands were calculated by Judd-Ofelt theory. The optical band gap energy (Eopt) values for direct allowed transition and Urbach energy were found to be in the range of 2.73-2.91 eV and 0.21-0.27 eV respectively. Four luminescence emission bands4G5/26H5/2,6H7/2,6H9/2and6H11/2were revealed under 406 nm excitation and intensity of all bands is found to be quenched with addition of Yb3+ions. The role of Yb3+co-doping in the optical properties is compared and understood.

Effects of GeO2 on the thermal stability and optical properties of Er3+/Yb3+-codoped oxyfluoride tellurite glasses

2011 ◽  
Vol 126 (3) ◽  
pp. 786-790 ◽  
Author(s):  
Yan Zhang ◽  
Chunhua Lu ◽  
Yijun Feng ◽  
Liyan Sun ◽  
Yaru Ni ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses

scholarly journals Effects of GeO2 on the thermal stability and optical properties of Er3+-doped germanate-tellurite glasses

2006 ◽  
Vol 55 (6) ◽  
pp. 3106
Author(s):  
Zhao Chun ◽  
Zhang Qin-Yuan ◽  
Yang Zhong-Min ◽  
Jiang Zhong-Hong
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses

Effects of Nb 2 O 5 on thermal stability and optical properties of Er 3+ -doped tellurite glasses

2006 ◽  
Vol 15 (9) ◽  
pp. 2158-2164 ◽  
Author(s):  
Zhao Chun ◽  
Zhang Qin-Yuan ◽  
Pan Yue-Xiao ◽  
Jiang Zhong-Hong
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Tellurite Glasses

scholarly journals Enhanced thermal stability and optical and structural properties of Tm+3 ions in doped tellurite glasses for photonic use

2021 ◽  
Vol 24 ◽  
pp. 104202
Author(s):  
N. Elkhoshkhany ◽  
Samir Marzouk ◽  
M. El–Sherbiny ◽  
Sally Yousri ◽  
Mohammed S. Alqahtani ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Structural Properties ◽  
Tellurite Glasses

Effect of gamma radiation on the structural, thermal and optical properties of PMMA/Sn0.75Fe0.25S2 nanocomposite

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Ali A. Alhazime ◽  
Nesreen T. El-Shamy ◽  
Kaoutar Benthami ◽  
Mai ME. Barakat ◽  
Samir A. Nouh
Keyword(s):  
Thermal Stability ◽  
Optical Properties ◽  
Gamma Irradiation ◽  
Optical Band Gap ◽  
Color Variation ◽  
Nanocomposite Films ◽  
Color Changes ◽  
Gamma Irradiated ◽  
Intermolecular Crosslinking ◽  
Amorphous Part

AbstractNanocomposite films of polymethylmethacrylate PMMA with Sn0.75Fe0.25S2 nanoparticles (NPs) were fabricated by both thermolysis and casting techniques. Changes in PMMA/Sn0.75Fe0.25S2 nanocomposite (NCP) due to gamma irradiation have been measured. XRD results indicate that the gamma doses of 10–80 kGy cause intermolecular crosslinking that reduces the ordered portion in the NPs. Bonding between the NPs and the host PMMA was confirmed by FTIR. TGA results indicate an enhancement in thermal stability in the NCP films irradiated with doses 20–80 kGy. The optical band gap was reduced from 3.23 to 2.47 eV upon gamma irradiation up to 80 kGy due bonding between the NPs and PMMA which enhanced the amorphous part of the NPs. Finally, the color variation between the blank and irradiated films (ΔE) was determined. Color changes immensely when the PMMA/Sn0.75Fe0.25S2 NCP films are gamma irradiated. Values of ΔE were as much as 31.6 which is an acceptable match in commercial reproduction on printing presses.

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