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...
| Main Author: | |
|---|---|
| Format: | Thesis |
| Language: | English |
| Published: |
2016
|
| Online Access: | https://ir.uitm.edu.my/id/eprint/18484/2/TM_IZYAN%20NURAINI%20SAPIAN%20AS%2016_5.pdf |
| _version_ | 1825735049903865856 |
|---|---|
| author | Sapian, Izyan Nuraini |
| author_facet | Sapian, Izyan Nuraini |
| author_sort | Sapian, Izyan Nuraini |
| collection | UITM |
| 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 | 2024-03-06T01:41:12Z |
| format | Thesis |
| id | oai:ir.uitm.edu.my:18484 |
| institution | Universiti Teknologi MARA |
| language | English |
| last_indexed | 2024-03-06T01:41:12Z |
| publishDate | 2016 |
| record_format | dspace |
| spelling | oai:ir.uitm.edu.my: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 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/18484/2/TM_IZYAN%20NURAINI%20SAPIAN%20AS%2016_5.pdf |
| work_keys_str_mv | AT sapianizyannuraini elasticandstructuralstudieson95xteo25la2o3xtio2lanthanumtelluriteandxli2o100x065geo2o35pboleadgermanateglassesizyannurainisapian |