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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| Format: | Thesis |
| Language: | English |
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2016
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| Online Access: | https://ir.uitm.edu.my/id/eprint/18484/ |
| _version_ | 1848804542785781760 |
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| author | Sapian, Izyan Nuraini |
| author_facet | Sapian, Izyan Nuraini |
| author_sort | Sapian, Izyan Nuraini |
| building | UiTM Institutional Repository |
| collection | Online Access |
| 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… |
| first_indexed | 2025-11-14T21:56:48Z |
| format | Thesis |
| id | uitm-18484 |
| institution | Universiti Teknologi MARA |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T21:56:48Z |
| publishDate | 2016 |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | uitm-184842021-12-01T09:10:09Z https://ir.uitm.edu.my/id/eprint/18484/ 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 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 NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/18484/2/TM_IZYAN%20NURAINI%20SAPIAN%20AS%2016_5.pdf Sapian, Izyan Nuraini (2016) 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) Masters thesis, thesis, Universiti Teknologi MARA. <http://terminalib.uitm.edu.my/18484.pdf> |
| 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 |
| 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_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_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_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 |
| url | https://ir.uitm.edu.my/id/eprint/18484/ |