Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian
Lanthanum tellurite and lead germanate glasses with compositions (95-x)TeO₂-5La₂O₃-xTiO₂ (x = 0 mol% to 20 mol%) and xLi₂O-(100-X)[0.65GeO₂.O35PbO] (x = 0 mol% to 40 mol%) were prepared by the melt quenching method, respectively. Elastic and structural properties of the glasses were studied by measu...
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my-uitm-ir.184842021-12-01T09:10:09Z Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian 2016 Sapian, Izyan Nuraini Lanthanum tellurite and lead germanate glasses with compositions (95-x)TeO₂-5La₂O₃-xTiO₂ (x = 0 mol% to 20 mol%) and xLi₂O-(100-X)[0.65GeO₂.O35PbO] (x = 0 mol% to 40 mol%) were prepared by the melt quenching method, respectively. Elastic and structural properties of the glasses were studied by measuring sound velocity using the pulse-echo-overlap technique and Fourier Transform Infrared (FTIR) spectroscopy, respectively. For (95-x)TeO₂-5La₂O₃-xTiO₂ (x = 0 mol% to 20 mol%) samples, ultrasonic velocity measurements showed both independent moduli (Cʟ and μ ) and related elastic moduli such as bulk modulus (Kₑ), Young's modulus, hardness and Debye temperature were observed to increase gradually for x < 15 mol% followed by a large increase at x = 20 mol% addition of TiO₂. The results obtained showed that this glass system becomes more stable, rigid and stiffer with addition of TiC>2. Structural analysis showed increase in bridging-oxygen (BO) compared to non-bridging oxygen (NBO). Differential Scanning Calorimetry (DSC) measurements showed Tg increased with addition of TiO₂ and confirms the increasing rigidity of the network… 2016 Thesis https://ir.uitm.edu.my/id/eprint/18484/ https://ir.uitm.edu.my/id/eprint/18484/2/TM_IZYAN%20NURAINI%20SAPIAN%20AS%2016_5.pdf text en public mphil masters Universiti Teknologi MARA Faculty of Applied Sciences |
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Universiti Teknologi MARA |
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UiTM Institutional Repository |
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English |
| description |
Lanthanum tellurite and lead germanate glasses with compositions (95-x)TeO₂-5La₂O₃-xTiO₂ (x = 0 mol% to 20 mol%) and xLi₂O-(100-X)[0.65GeO₂.O35PbO] (x = 0 mol% to 40 mol%) were prepared by the melt quenching method, respectively. Elastic and structural properties of the glasses were studied by measuring sound velocity using the pulse-echo-overlap technique and Fourier Transform Infrared (FTIR) spectroscopy, respectively. For (95-x)TeO₂-5La₂O₃-xTiO₂ (x = 0 mol% to 20 mol%) samples, ultrasonic velocity measurements showed both independent moduli (Cʟ and μ ) and related elastic moduli such as bulk modulus (Kₑ), Young's modulus, hardness and Debye temperature were observed to increase gradually for x < 15 mol% followed by a large increase at x = 20 mol% addition of TiO₂. The results obtained showed that this glass system becomes more stable, rigid and stiffer with addition of TiC>2. Structural analysis showed increase in bridging-oxygen (BO) compared to non-bridging oxygen (NBO). Differential Scanning Calorimetry (DSC) measurements showed Tg increased with addition of TiO₂ and confirms the increasing rigidity of the network… |
| format |
Thesis |
| qualification_name |
Master of Philosophy (M.Phil.) |
| qualification_level |
Master's degree |
| author |
Sapian, Izyan Nuraini |
| spellingShingle |
Sapian, Izyan Nuraini Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| author_facet |
Sapian, Izyan Nuraini |
| author_sort |
Sapian, Izyan Nuraini |
| title |
Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| title_short |
Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| title_full |
Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| title_fullStr |
Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| title_full_unstemmed |
Elastic and structural studies on (95-x)TeO₂-5La₂O₃-xTiO₂ lanthanum tellurite and xLi₂O-(100-X)[0.65GeO₂.O35PbO]lead germanate glasses / Izyan Nuraini Sapian |
| title_sort |
elastic and structural studies on (95-x)teo₂-5la₂o₃-xtio₂ lanthanum tellurite and xli₂o-(100-x)[0.65geo₂.o35pbo]lead germanate glasses / izyan nuraini sapian |
| granting_institution |
Universiti Teknologi MARA |
| granting_department |
Faculty of Applied Sciences |
| publishDate |
2016 |
| url |
https://ir.uitm.edu.my/id/eprint/18484/2/TM_IZYAN%20NURAINI%20SAPIAN%20AS%2016_5.pdf |
| _version_ |
1783733688531419136 |