Physical, structural and optical studies on magnesium borate glasses doped with dysprosium ion

Ichoja, A.; Hashim, Suhairul; Ghoshal, Sib Krishna; Hashim, I. H.; Omar, R.S.

doi:10.1016/j.jre.2018.05.013

Cited by 85 publications

(13 citation statements)

References 40 publications

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“…The reduction in the energy of Urbach is attributed to the creation of fewer defects, as reported [37]. Figure 8 and Table 6 show a slight gradual increase in refractive index values from 2.29 to 2.35 with increasing Dy 2 O 3 concentration that can be attributed to the increase in electronic polarizability from 2.67 to 2.75 [17]. The sample has a higher refractive index, as it has a smaller bandgap value that reflects the compactness of the glass network structure.…”

Section: Resultsmentioning

confidence: 61%

“…Noting that, the influence of Dy 3+ ion on difference absorption bands led to their appropriate wavelengths, energies and oscillator strengths [34]. The spectra show ten inhomogeneous of absorption bands existing at the wavelengths 352, 393, 458, 669, 802, 841, 904, 1095, 1271 and 1703 nm due to the transitions of Dy 3+ at the ground state ( 6 H 15/2 ) into different excited states ( 6 P 7/2 ), ( 4 F 7/2 ), ( 4 I 15/2 ), ( 4 F 9/2 ), ( 6 F 3/2 ), ( 6 F 5/2 ), ( 6 F 7/2 ), ( 6 F 9/2 + 6 H 7/2 ), ( 6 F 11/2 + 6 H 9/2 ) and ( 6 H 11/2 ), respectively [17]. Due to the strong absorption of LAB host glass, some of the absorption bands have disappeared in ultraviolet (UV) regions and are very sparse at 352 nm ( 6 H 15/2 → 6 P 7/2 ), 393 nm ( 6 H 15/2 → 4 F 7/2 ) and 456 nm ( 6 H 15/2 → 4 I 15/2 ), and also they have very low intensity [32].…”

Section: Resultsmentioning

confidence: 99%

“…where Z m is the atomic mass of the dopant [16,17]. The non-crystalline phases for the selected samples were observed using X-ray diffraction (XRD) system PANalytical X'pert PRO (PW3040/60 MPD, Philips, EA, The Netherland).…”

Section: Structural and Physical Parametersmentioning

confidence: 99%

“…where ε(ν) is the coefficient of molar the absorption of the each band at an energy of ν(cm −1 ) [17][18][19]. The refractive index (n) for the electronic polarization of ions and the local field of materials is among the most important optically dependent material parameters.…”

Section: Optical Propertiesmentioning

confidence: 99%

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Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

et al. 2020

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In this study, a series of Li2O-Al2O3-B2O3 glasses doped with various concentrations of Dy2O3 (where x = 0.0, 0.2, 0.4, 0.6, 0.8, and 1.0 mol%) were prepared by using a conventional melt-quenching technique. The structural, physical and optical properties of the glasses were examined by utilising a variety of techniques instance, X-ray diffraction (XRD), UV–Vis-NIR spectrometer, Fourier transform infrared (FTIR) and photoluminescence (PL). The XRD spectra demonstrate the amorphous phase of all glasses. Furthermore, the UV-vis-NIR spectrometers have registered optical absorption spectra a numbers of peaks which exist at 1703, 1271, 1095, 902, 841, 802, 669, 458, 393 and 352 nm congruous to the transitions from the ground of state (6H15/2) to different excited states, 6H11/2, 6F11/2 + 6H9/2, 6F9/2 + 6H7/2, 6F7/2, 6F5/2, 6F3/2, 4F9/2, 4I15/2, 4F7/2 and 6P7/2, respectively. The spectra of emission exhibit two strong emanation bands at 481 nm and 575 nm in the visible region, which correspond to the transitions 4F9/2 → 6H15/2 and 4F9/2 → 6H13/2. All prepared glass samples doped with Dy2O3 show an increase in the emission intensity with an increase in the concentration of Dy3+. Based on the obtained results, the aforementioned glass samples may have possible applications, such as optical sensor and laser applications.

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Section: Resultsmentioning

confidence: 61%

Section: Resultsmentioning

confidence: 99%

Section: Structural and Physical Parametersmentioning

confidence: 99%

Section: Optical Propertiesmentioning

confidence: 99%

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Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

et al. 2020

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“…The most effective concentrations of Pr 3+ ions for the brightest photoluminescence (PL) emission and the best LPL characteristic are about 3 mol% and 0.5 mol%, respectively. The incorporation of 0.3 mol% Pr 6 O 11 to germano-tellurite glasses enhances the intensity of the thermoluminescence response, but in different ways for series with and without Ga 2 O 3 [133]. The inversion of the maxima of the main TL peaks between both series is noticeable.…”

Section: Discussion Of the Resultsmentioning

confidence: 92%

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

2021

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Different types of ceramics and glass have been extensively investigated due to their application in brachytherapy, radiotherapy, nuclear medicine diagnosis, radioisotope power systems, radiation processing of food, geological and archaeological dating methods. This review collects the newest experimental results on the thermoluminescent (TL) properties of crystalline and glassy materials. The comparison of the physico-chemical properties shows that glassy materials could be a promising alternative for dosimetry purposes. Furthermore, the controlled process of crystallization can enhance the thermoluminescent properties of glasses. On the other hand, the article presents information on the ranges of the linear response to the dose of ionizing radiation and on the temperature positions of the thermoluminescent peaks depending on the doping concentration with rare-earth elements for crystalline and glassy materials. Additionally, the stability of dosimetric information storage (fading) and the optimal concentration of admixtures that cause the highest thermoluminescent response for a given type of the material are characterized. The influence of modifiers addition, i.e., rare-earth elements on the spectral properties of borate and phosphate glasses is described.

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Structural, optical, and gamma-ray-sensing characterization of (35 − x) PbO–10 MgO–10Na2O–5 Fe2O3–10 BaO–(30 − x) B2O3 glasses

et al. 2019

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Physical, structural and optical studies on magnesium borate glasses doped with dysprosium ion

Cited by 85 publications

References 40 publications

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

Impact of Dy2O3 Substitution on the Physical, Structural and Optical Properties of Lithium–Aluminium–Borate Glass System

Ceramics, Glass and Glass-Ceramics for Personal Radiation Detectors

Structural, optical, and gamma-ray-sensing characterization of (35 − x) PbO–10 MgO–10Na2O–5 Fe2O3–10 BaO–(30 − x) B2O3 glasses

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