Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide

In this study, the structural, optical and thermoluminescence (TL) properties of lithium sodium borate (LNB) glass doped with Er3+ or Nd3+ ions were investigated. The glass dosimeters were prepared by using melt-quenching technique. The X – ray Diffraction (XRD) spectra had confirmed the amorphous n...

وصف كامل

محفوظ في:
التفاصيل البيبلوغرافية
المؤلف الرئيسي: Razak, Nashru Amira
التنسيق: أطروحة
اللغة:English
منشور في: 2016
الموضوعات:
الوصول للمادة أونلاين:http://eprints.utm.my/id/eprint/81617/1/NashruAmiraRazakMFS2015.pdf
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spelling my-utm-ep.816172019-09-10T01:50:04Z Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide 2016 Razak, Nashru Amira QC Physics In this study, the structural, optical and thermoluminescence (TL) properties of lithium sodium borate (LNB) glass doped with Er3+ or Nd3+ ions were investigated. The glass dosimeters were prepared by using melt-quenching technique. The X – ray Diffraction (XRD) spectra had confirmed the amorphous nature of the glass samples. The absorption spectra of Er3+ ion doped LNB (LNB:Er) and Nd3+ ion doped LNB (LNB:Nd) glasses revealed hypersensitive transitions at (4I15/2?2H11/2) and (4I9/2 ? 4G5/2 + 2G7/2), respectively. Emission spectra of LNB glasses doped Er3+ ions had shown three violet bands centered at 369 nm (4G11/2?4I15/2), 396 nm (2P3/2?4I13/2) and 423 nm (2H9/2?4I15/2) and a blue band at 477 nm (2P3/2?4I11/2). Meanwhile, LNB glasses doped with Nd3+ ions had exhibited three prominent peaks of photoluminescence spectra which are green, orange and red bands centered at 538 nm (4G7/2 ? 4I9/2), 603 nm [4G7/2 ? 4I11/2, 4G5/2 ? 4I9/2] and 675 nm [4G7/2 ? 4I13/2, 4G5/2 ? 4I11/2], respectively. The introduction of rare earth ions into the glass system had led to the formation of glow curve with prominent peaks at 180 and 220 °C for LNB:Er and LNB:Nd, respectively. The optimum TL intensity of the prepared glasses was determined at 0.3 mol % of Er2O3 and 0.5 mol % of Nd2O3. A good linearity of the TL response against dose was achieved between 0.5 to 4.0 Gy. The sensitivity of 0.3 mol % of Er2O3 glass dosimeter was two times higher than the sensitivity of 0.5 mol % of Nd2O3. The calculated values of the effective atomic number (Zeff) for both compositions were 7.55 which is close to that of the human soft tissue (Zeff = 7.42). These promising features had demonstrated the potential of the studied glasses to be used as radiation. 2016 Thesis http://eprints.utm.my/id/eprint/81617/ http://eprints.utm.my/id/eprint/81617/1/NashruAmiraRazakMFS2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:120239 masters Universiti Teknologi Malaysia Physics
institution Universiti Teknologi Malaysia
collection UTM Institutional Repository
language English
topic QC Physics
spellingShingle QC Physics
Razak, Nashru Amira
Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
description In this study, the structural, optical and thermoluminescence (TL) properties of lithium sodium borate (LNB) glass doped with Er3+ or Nd3+ ions were investigated. The glass dosimeters were prepared by using melt-quenching technique. The X – ray Diffraction (XRD) spectra had confirmed the amorphous nature of the glass samples. The absorption spectra of Er3+ ion doped LNB (LNB:Er) and Nd3+ ion doped LNB (LNB:Nd) glasses revealed hypersensitive transitions at (4I15/2?2H11/2) and (4I9/2 ? 4G5/2 + 2G7/2), respectively. Emission spectra of LNB glasses doped Er3+ ions had shown three violet bands centered at 369 nm (4G11/2?4I15/2), 396 nm (2P3/2?4I13/2) and 423 nm (2H9/2?4I15/2) and a blue band at 477 nm (2P3/2?4I11/2). Meanwhile, LNB glasses doped with Nd3+ ions had exhibited three prominent peaks of photoluminescence spectra which are green, orange and red bands centered at 538 nm (4G7/2 ? 4I9/2), 603 nm [4G7/2 ? 4I11/2, 4G5/2 ? 4I9/2] and 675 nm [4G7/2 ? 4I13/2, 4G5/2 ? 4I11/2], respectively. The introduction of rare earth ions into the glass system had led to the formation of glow curve with prominent peaks at 180 and 220 °C for LNB:Er and LNB:Nd, respectively. The optimum TL intensity of the prepared glasses was determined at 0.3 mol % of Er2O3 and 0.5 mol % of Nd2O3. A good linearity of the TL response against dose was achieved between 0.5 to 4.0 Gy. The sensitivity of 0.3 mol % of Er2O3 glass dosimeter was two times higher than the sensitivity of 0.5 mol % of Nd2O3. The calculated values of the effective atomic number (Zeff) for both compositions were 7.55 which is close to that of the human soft tissue (Zeff = 7.42). These promising features had demonstrated the potential of the studied glasses to be used as radiation.
format Thesis
qualification_level Master's degree
author Razak, Nashru Amira
author_facet Razak, Nashru Amira
author_sort Razak, Nashru Amira
title Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
title_short Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
title_full Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
title_fullStr Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
title_full_unstemmed Structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
title_sort structural, optical and luminescence properties of lithium sodium borate glass doped with erbium of neodymium oxide
granting_institution Universiti Teknologi Malaysia
granting_department Physics
publishDate 2016
url http://eprints.utm.my/id/eprint/81617/1/NashruAmiraRazakMFS2015.pdf
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