Effect Bi2O3 on the physical, structural and radiation shielding properties of Er3+ ions doped bismuth sodiumfluoroborate glasses

Mariyappan, M.; Marimuthu, K.; Sayyed, M.I.; Dong, Mengge; Kara, Ümit

doi:10.1016/j.jnoncrysol.2018.07.025

Cited by 117 publications

(23 citation statements)

References 30 publications

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“…The increase in molar volume may be regarded as an outcome of the regular evolution of more NBOs, which is characteristic of alteration of the volume concentration. To get better insight, by virtue of the approximated values of the density and molar volume, the molar volume of oxygen (V O ) (volume of glass in which 1 mol of oxygen is confined) and the oxygen packing density (OPD) were calculated using the following formula [40,41]: where M is the molecular mass of the glass sample and n is the number of oxygen atoms per formula units. Figure 5(b) shows the molar volume of oxygen and OPD of the Vx-M2 series samples as a function of V 2 O 5 content.…”

Section: Resultsmentioning

confidence: 99%

Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Lian

Zhang

et al. 2020

Mater. Res. Express

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AbstactThe effect of V 2 O 5 addition on molybdates crystallization tendency, glass structure and chemical durability of aluminoborosilicate glass belonging to SiO 2 -B 2 O 3 -CaO-Na 2 O-Al 2 O 3 -MoO 3 system has been studied. The results confirm that V 2 O 5 addition can effectively suppress the crystallization tendency of powellite and enhance the molybdenum solubility in the glass. The MoO 3 solubility limit is found to be 2.8 mol% in the V 2 O 5 -containing aluminoborosilicate glass. Raman results reveal that V 2 O 5 addition seems to modify the local structural environment of isolated MoO 4 units and increase their chemical disorder in the glass, which is favored for molybdenum incorporation in the glass. The molar volume and glass transition temperature of samples are found to depend on V 2 O 5 content. Product consistency test (PCT) results show that the normalized leaching rates of the V 2 O 5 -containing aluminoborosilicate glass maintain at a fairly low level compared with standard borosilicate glassy waste form.

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Section: Resultsmentioning

confidence: 99%

Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Lian

Zhang

et al. 2020

Mater. Res. Express

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“…A weak peak around 1630 cm −1 is due to the bending vibration mode of OH groups [ 36 ]. The inset of Figure 6b shows the amplified wavenumber between 600–700 cm −1 ; one peak at 668 cm −1 is related to the Ta–O–Ta vibration in TaO 6 octahedral units, which appears in three samples, but peak at 648 cm −1 , related to the tantalum clusters, appears only in PBT 10 , which usually appears at a high Ta 2 O 5 -concentrated sample [ 9 ]. The appearance of a peak at 648 cm −1 also indicates that TaO 6 aggregates in a network, which could rapidly increase the size and numbers of Ta 2 O 5 nanocrystals.…”

Section: Resultsmentioning

confidence: 99%

“…However, except for several Ta 2 O 5 thin films, Ta 2 O 5 has been less investigated due to its lower solubility in classical glass formers, as well as its high melting temperature (1825 °C). The studies of Ta 2 O 5 are limited to several Ta 2 O 5 -doped silicate [ 7 ], phosphate [ 8 , 9 , 10 ], germinate [ 11 ], and tellurite [ 12 ] glasses for coating, photovoltaic, crystallization, and dielectric studies. Rare Ta 2 O 5 -doped heavy metal oxide glasses are reported, except recently published Bi 2 O 3 –TeO 2 –ZnO glasses [ 12 ] and ZnO–Ta 2 O 5 –TeO 2 [ 8 ] by the Gokhan Kilic group.…”

Section: Introductionmentioning

confidence: 99%

“…Ta 2 O 5 is an intriguing material because it is a “modifier” oxide composed of high field-strength cations, which has not been melt-quenched to form glass but is typically formed by ion beam sputtering [ 8 ]. At a lower content, it acts as a glass former, which increases the network connectivity with higher rigidity, resulting in a higher glass transition temperature and larger thermal stability against devitrification in phosphate glass [ 9 ] and 93GeO 2 –6Ta 2 O 5 –Bi 2 O 3 glass [ 11 ]. Ta 2 O 5 has been found to be a modifier, in most cases, at a higher content, which exists as TaO 6 units [ 13 , 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Ta2O5 Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass

2021

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In this study, for the first time, diamagnetic 5d0 Ta5+ ions and Ta2O5 nanocrystals were utilized to enhance the structural, mechanical, magnetic, and radiation shielding of heavy metal oxide glasses. Transparent Ta2O5 nanocrystal-doped heavy metal oxide glasses were obtained, and the embedded Ta2O5 nanocrystals had sizes ranging from 20 to 30 nm. The structural analysis of the Ta2O5 nanocrystal displays the transformation from hexagonal to orthorhombic Ta2O5. Structures of doped glasses were studied through X-ray diffraction and infrared and Raman spectra, which reveal that Ta2O5 exists in highly doped glass as TaO6 octahedral units, acting as a network modifier. Ta5+ ions strengthened the network connectivity of 1–5% Ta2O5-doped glasses, but Ta5+ acted as a network modifier in a 10% doped sample and changed the frame coordination units of the glass. All Ta2O5-doped glasses exhibited improved Vicker’s hardness, magnetization (9.53 × 10−6 emu/mol), and radiation shielding behaviors (RPE% = 96–98.8%, MAC = 32.012 cm2/g, MFP = 5.02 cm, HVL = 0.0035–3.322 cm, and Zeff = 30.5) due to the increase in density and polarizability of the Ta2O5 nanocrystals.

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“…Bismuth oxide gained a great attention as it can improve the chemical durability of glass, has a high refractive index and non-toxic nature, very good infrared transmissions and high values of nonlinear optical susceptibility and polarizability [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Effect of gamma ray on some properties of bismuth borate glasses containing different transition metals

2020

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This work aims to study the influence of gamma irradiation on some bismuth borate glasses doped with different transition metal oxides (CuO, CoO, ZnO and CdO). The structure of the glass matrix was analyzed by Fourier transform infrared and ultraviolet-visible spectroscopy before and after gamma irradiation at doses of 1 kGy, 20 kGy and 50 kGy. Additionally, the attention is made in determining the attenuation parameters against gamma rays. Mass attenuation coefficient determined experimentally and calculated theoretically by WinXCom program, which is a significant program in the field of radiation shielding. It is found that the attenuation parameters of gamma ray have higher values of the sample without transition metal oxides and the other doped with CdO. From hardness measurements before and after irradiation, it was found that hardness increases with the addition of transition metal oxides to glass. The results of different techniques show that these glasses possess a slight effect on the network structure of the samples against gamma irradiation. So, it can be used in different applications of nuclear fields.

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Effect Bi2O3 on the physical, structural and radiation shielding properties of Er3+ ions doped bismuth sodiumfluoroborate glasses

Cited by 117 publications

References 30 publications

Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Ta2O5 Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass

Effect of gamma ray on some properties of bismuth borate glasses containing different transition metals

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Effect Bi2O3 on the physical, structural and radiation shielding properties of Er3+ ions doped bismuth sodiumfluoroborate glasses

Cited by 117 publications

References 30 publications

Effect of V2O5 on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Effect of V2O5 on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Ta2O5 Nanocrystals Strengthened Mechanical, Magnetic, and Radiation Shielding Properties of Heavy Metal Oxide Glass

Effect of gamma ray on some properties of bismuth borate glasses containing different transition metals

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Product

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Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass

Effect of V₂O₅ on crystallization tendency and chemical durability of Mo-bearing aluminoborosilicate glass