Effects of modifier oxides in the nonlinear refractive index of niobium-borotellurite glasses

Pelosi, André Gasparotto; Santos, Sabrina Nicoleti Carvalho dos; Dipold, Jessica; Andrade, Marcelo B.; Hernandes, Antônio Carlos; Almeida, Juliana M. P.; Mendonça, Cleber Renato

doi:10.1016/j.jallcom.2021.160382

Cited by 19 publications

(5 citation statements)

References 49 publications

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“…In this study, the nuclear radiationshielding properties of Ta 2 O 5 -and ZrO 2 -doped niobiumborotellurite glasses [40] were characterized in a wide energy range (i.e., from 0.015 MeV to 15 MeV). Nb 2 O 5 was replaced with 1 mol % Ta 2 O 5 and 1 mol % ZrO 2 to evaluate the influence of modifier oxides.…”

Section: Glass Samplesmentioning

confidence: 99%

“…where μ (cm −1 ) is the linear attenuation coefficient of the sample and t is the physical thickness (cm) of the shielding material. To understand gamma energy loss as it passes through the shielding material, the mass attenuation coefficients (μ/ρ) can be used for the shielding materials [40]. e mass attenuation coefficient of a compound or mixture is calculated by summing the individual contributions of each of the elements that make up the mixture or compound (see for detailed calculation [43][44][45].…”

Section: Determination Of Gamma-ray-shielding Properties Using the Mc...mentioning

confidence: 99%

“…e literature review showed that no previous research has examined the impact of Nb 2 O 5 on borotellurite glasses' absorption capacities using Monte Carlo simulations for gamma rays. Consequently, in this study, we present an analysis of the gammaray radiation protection properties of Nb 2 O 5 added to borotellurite glass [40]. e nominal compositions of the investigated glass sample are shown below.]…”

Section: Introductionmentioning

confidence: 99%

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Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Tekın

Ali

ALMisned

et al. 2022

Science and Technology of Nuclear Installations

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In this study, the monotonic effect of Ta2O5 and ZrO2 in some selected borotellurite glasses was investigated in terms of their impact on gamma-ray-shielding competencies. Accordingly, three niobium-reinforced borotellurite glasses (S1 : 75TeO2 + 15B2O3 + 10Nb2O5, S2 : 75TeO2 + 15B2O3 + 9Nb2O5 + 1Ta2O5, and S3 : 75TeO2 + 15B2O3 + 8Nb2O5 + 1Ta2O5 + 1ZrO2) were modelled in the general-purpose MCNPX Monte Carlo code. They have been defined as an attenuator sample between the point isotropic gamma-ray source and the detector in terms of determining their attenuation coefficients. To verify the MC results, attenuation coefficients were then compared with the Phy-X/PSD program data. Our findings clearly demonstrate that although some behavioral changes occurred in the shielding qualities, modest improvements occurred in the attenuation properties depending on the modifier variation and its magnitude. However, the replacement of 2% moles of Nb2O5 with 1% mole of Ta2O5 and 1% mole of ZrO2 provided significant improvements in both glass density and attenuation properties against gamma rays. Finally, the HVL values of the S3 sample were compared with some glass- and concrete-shielding materials and the S3 sample was reported for its outstanding properties. As a consequence of this investigation, it can be concluded that the indicated type of additive to be added to borotellurite glasses will provide some advantages, particularly when used in radiation fields, by increasing the shielding qualities moderately.

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Section: Glass Samplesmentioning

confidence: 99%

Section: Determination Of Gamma-ray-shielding Properties Using the Mc...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Tekın

Ali

ALMisned

et al. 2022

Science and Technology of Nuclear Installations

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“…30 The host matrix plays an important role in providing a suitable environment to achieve efficient luminescence through ET. Over the decades, alkaline and alkalisupported mixed glass formers, such as borotellurites, 31 borophosphates, 32 and borosilicates, 33 have been extensively investigated by research fraternity. It is well known that pure borates and phosphates are two different glass network formers.…”

Section: Introductionmentioning

confidence: 99%

Excitation‐dependent energy transfer and color tunability in Dy³⁺/Eu³⁺ co‐doped multi‐component borophosphate glasses

et al. 2023

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Using the melt‐quench technique, potassium zinc borophosphate (KZnBP) glasses incorporated with Dy3+, Eu3+, and Dy3+/Eu3+ ions individually and combinedly were prepared, and their photoluminescence (PL)‐related features were investigated. The KZnBP glass containing an optimized content of Dy3+ (0.5 mol%) is co‐doped with Eu3+ in various contents, and the energy transfer (ET) process between them was studied at λexci = 349, 364, 387 (Dy3+), and 394 nm (Eu3+). The Dy3+/Eu3+ co‐doped system, when excited with Dy3+ excitations has resulted in a significant decrease in the intensity of Dy3+ peaks observed at 480 nm (4F9/2→6H15/2, blue) and 574 nm (4F9/2→6H13/2, yellow), with simultaneous enhancement of the intensity of Eu3+ peaks at 591 nm (5D0→7F1, orange) and 617 nm (5D0→7F2, red). This trend is due to the efficient energy transfer from Dy3+ to Eu3+, indicating that Eu3+ ions were sensitized by Dy3+ ions. Dexter's theory and the Inokuti–Hirayama (I–H) model revealed that the dipole–dipole interaction is accountable for the energy transfer from Dy3+ to Eu3+ through energy‐transfer channels [4F9/2(Dy3+)+7F1,2(Eu3+)→6H15/2(Dy3+)+5D2(Eu3+)] and [4F9/2(Dy3+)+7F0(Eu3+)→6H13/2(Dy3+)+5D0(Eu3+)]. The color coordinates of the Dy3+/Eu3+ co‐doped glasses under various excitations fall within the white light emission spectrum, indicating their potential application in warm white LEDs.

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“…Barium oxide (BaO) is known for its high resistance to extreme radioactive radiation, increased density, and enhanced optical transparency [2]. Niobium oxide (Nb2O5) is chosen due to its vacant d-orbital, known for strengthening nonlinear optical sensitivity [3]. Rare-earth ions, like Pr 3+ , possess unique energy levels and electronic configurations, making them exceptional candidates for luminescence studies.…”

Section: Introductionmentioning

confidence: 99%

Concentration dependence of visible luminescence from Pr³⁺-doped niobium zinc barium boro-tellurite glasses

Thanyaphirak,

Yasaka,

Sa-ardsin

et al. 2023

J. Phys.: Conf. Ser.

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This study explored the luminescence properties of a glass with the compositions defined in the formula (30-x)TeO2-30B2O3-10ZnO-20BaO-10Nb2O5, doped with varying concentrations of praseodymium (Pr3+) ions (x = 0.00 to 1.50 mol%). The investigation covers multiple aspects, including the physical, structural, optical, and luminescence properties, to explain the material’s behaviour with respect to its physical attributes. The measured density, molar volume, and refractive index span a range of 3.76-3.86 g/cm3, 35-36 cm3/mol, and 1.71-1.79, respectively. Structural analysis through FTIR spectroscopy demonstrates characteristic stretching vibrations of Te-O (677 cm−1) and B-O (892 cm−1) bonds, providing insight into the molecular arrangement within the glass composition. The optical investigation on transitions from the ground state 3H4 to higher-energy states: 1D2 (590 nm), 1G4 (1008 nm), 3F3 (1529 nm), and 3F2 (1932 nm). These emission peaks furnish crucial information on the material’s electron transitions, which are suitable for curtain potential applications in optical devices. Significantly, our study reveals a quenching effect at a Pr3+ doping concentration of 0.10 mol%, indicating interactions between Pr3+ ions and the glass matrix, affecting luminescence behaviour. This work contributes to an enhanced understanding of material properties and lays the groundwork for potential applications in luminescence and optical technologies.

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Effects of modifier oxides in the nonlinear refractive index of niobium-borotellurite glasses

Cited by 19 publications

References 49 publications

Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Excitation‐dependent energy transfer and color tunability in Dy³⁺/Eu³⁺ co‐doped multi‐component borophosphate glasses

Concentration dependence of visible luminescence from Pr³⁺-doped niobium zinc barium boro-tellurite glasses

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Effects of modifier oxides in the nonlinear refractive index of niobium-borotellurite glasses

Cited by 19 publications

References 49 publications

Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Multiple Assessments on the Gamma-Ray Protection Properties of Niobium-Doped Borotellurite Glasses: A Wide Range Investigation Using Monte Carlo Simulations

Excitation‐dependent energy transfer and color tunability in Dy3+/Eu3+ co‐doped multi‐component borophosphate glasses

Concentration dependence of visible luminescence from Pr3+-doped niobium zinc barium boro-tellurite glasses

Contact Info

Product

Resources

About

Excitation‐dependent energy transfer and color tunability in Dy³⁺/Eu³⁺ co‐doped multi‐component borophosphate glasses

Concentration dependence of visible luminescence from Pr³⁺-doped niobium zinc barium boro-tellurite glasses