Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses
Six compositions of 1 mol % Dy³⁺-doped multicomponent borate glasses containing single Li₂O, Na₂O, K₂O and mixed Li₂O–Na₂O, Li₂O–K₂O, and Na₂O–K₂O oxides have been synthesized by well-known melt-quenching technique. Following the measured density and refractive index values, various physical paramet...
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| Format: | Article |
| Language: | English |
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MAIK Nauka-Interperiodica Publishing
2018
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| Online Access: | http://psasir.upm.edu.my/id/eprint/73506/ http://psasir.upm.edu.my/id/eprint/73506/1/Physical%20properties%2C%20optical%20band%20gaps%20and%20radiation%20shielding%20parameters%20exploration.pdf |
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| author | Sayyed, M. I. Narayana, Gandham Lakshmi Moghaddasi, Majid Kityk, I. V. Mahdi, Mohd Adzir |
| author_facet | Sayyed, M. I. Narayana, Gandham Lakshmi Moghaddasi, Majid Kityk, I. V. Mahdi, Mohd Adzir |
| author_sort | Sayyed, M. I. |
| building | UPM Institutional Repository |
| collection | Online Access |
| description | Six compositions of 1 mol % Dy³⁺-doped multicomponent borate glasses containing single Li₂O, Na₂O, K₂O and mixed Li₂O–Na₂O, Li₂O–K₂O, and Na₂O–K₂O oxides have been synthesized by well-known melt-quenching technique. Following the measured density and refractive index values, various physical parameters were estimated for all the glass samples and differences in them are correlated with structural changes. To explore optical properties like absorption edge (λcut-off), optical band gap energy (Eopt), and Urbach energy (ΔE), optical absorption spectra were recorded for all the glasses. The Eg has been calculated using Davis and Mott theory for direct allowed, and indirect allowed transitions and the results were reported. The Eg values are also estimated using absorption spectrum fitting (ASF) method. The optical parameters variations have also been associated with the structural changes occurring in the glasses with different alkali/mixed alkali oxides content presence. The shielding properties of the prepared glasses were studied in terms of effective atomic numbers (Zeff), mean free path (MFP), half value layer (HVL) and macroscopic effective removal cross-section (ΣR). From these results, it was found that Potassium (K) glass shows superior gamma ray shielding properties due to a higher value of Zeff and lower values of both MFP and HVL. These results indicate that the prepared glasses might be utilized in place of some common shielding materials to shield γ-rays and neutrons. |
| first_indexed | 2025-11-15T11:55:11Z |
| format | Article |
| id | upm-73506 |
| institution | Universiti Putra Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-15T11:55:11Z |
| publishDate | 2018 |
| publisher | MAIK Nauka-Interperiodica Publishing |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | upm-735062020-07-08T01:36:54Z http://psasir.upm.edu.my/id/eprint/73506/ Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses Sayyed, M. I. Narayana, Gandham Lakshmi Moghaddasi, Majid Kityk, I. V. Mahdi, Mohd Adzir Six compositions of 1 mol % Dy³⁺-doped multicomponent borate glasses containing single Li₂O, Na₂O, K₂O and mixed Li₂O–Na₂O, Li₂O–K₂O, and Na₂O–K₂O oxides have been synthesized by well-known melt-quenching technique. Following the measured density and refractive index values, various physical parameters were estimated for all the glass samples and differences in them are correlated with structural changes. To explore optical properties like absorption edge (λcut-off), optical band gap energy (Eopt), and Urbach energy (ΔE), optical absorption spectra were recorded for all the glasses. The Eg has been calculated using Davis and Mott theory for direct allowed, and indirect allowed transitions and the results were reported. The Eg values are also estimated using absorption spectrum fitting (ASF) method. The optical parameters variations have also been associated with the structural changes occurring in the glasses with different alkali/mixed alkali oxides content presence. The shielding properties of the prepared glasses were studied in terms of effective atomic numbers (Zeff), mean free path (MFP), half value layer (HVL) and macroscopic effective removal cross-section (ΣR). From these results, it was found that Potassium (K) glass shows superior gamma ray shielding properties due to a higher value of Zeff and lower values of both MFP and HVL. These results indicate that the prepared glasses might be utilized in place of some common shielding materials to shield γ-rays and neutrons. MAIK Nauka-Interperiodica Publishing 2018 Article PeerReviewed text en http://psasir.upm.edu.my/id/eprint/73506/1/Physical%20properties%2C%20optical%20band%20gaps%20and%20radiation%20shielding%20parameters%20exploration.pdf Sayyed, M. I. and Narayana, Gandham Lakshmi and Moghaddasi, Majid and Kityk, I. V. and Mahdi, Mohd Adzir (2018) Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses. Glass Physics and Chemistry, 44 (4). 279 - 291. ISSN 1087-6596; ESSN: 1608-313X https://link.springer.com/article/10.1134%2FS1087659618040119 10.1134/S1087659618040119 |
| spellingShingle | Sayyed, M. I. Narayana, Gandham Lakshmi Moghaddasi, Majid Kityk, I. V. Mahdi, Mohd Adzir Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title | Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title_full | Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title_fullStr | Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title_full_unstemmed | Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title_short | Physical properties, optical band gaps and radiation shielding parameters exploration for Dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| title_sort | physical properties, optical band gaps and radiation shielding parameters exploration for dy³⁺-doped alkali/mixed alkali multicomponent borate glasses |
| url | http://psasir.upm.edu.my/id/eprint/73506/ http://psasir.upm.edu.my/id/eprint/73506/ http://psasir.upm.edu.my/id/eprint/73506/ http://psasir.upm.edu.my/id/eprint/73506/1/Physical%20properties%2C%20optical%20band%20gaps%20and%20radiation%20shielding%20parameters%20exploration.pdf |