FTIR spectra and properties of iron borophosphate glasses containing simulated nuclear wastes

Liao, Qilong; Wang, Fu; Chen, Kuiru; Pan, Sheqi; Zhu, Hanzhen; Lu, Mingwei; Qin, Jianfa

doi:10.1016/j.molstruc.2015.03.034

Cited by 47 publications

(8 citation statements)

References 37 publications

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“…[16] The presence of water molecules was verified through the O-H vibrational frequencies in the range 2360-3440 cm À1 . [36] The band at 570 cm À1 was due to the bending mode of the PO 4 3À unit. [34] The bending and stretching modes of BO 4 units were observed at c. 720 and 1020 cm -1, respectively.…”

Section: Thermal Properties Of Nd-doped Sbp Glassmentioning

confidence: 97%

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

et al. 2021

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Neodymium-doped glass finds application in lasers with high energy and low pulse width. In the present study, a series of Nd 3+ ions (0-2 mol%)-doped strontium borophosphate (SBP) glass samples was prepared through the conventional melt quench method. A broad peak in the X-ray diffraction spectrum confirmed the formation of a single-phase amorphous borophosphate glass. Fourier transform infrared spectra of the doped and undoped glass samples indicated the presence of borate and phosphate groups that form the anionic network. The thermal properties of the glass samples were determined from thermogravimetry/differential thermal analysis.Photoluminescence and ultraviolet-visible light techniques were used to investigate the optical properties of the as-prepared SBP:Nd glass. The Judd-Ofelt (JO) intensity parameters Ω λ (2, 4, 6), stimulated emission cross-section, branching ratios, and transition probabilities of the Nd 3+ -doped glass were obtained through the JO analysis.Characteristic Nd 3+ emission peaks were observed at 1330, 1060, and 876 nm, corresponding to the 4 F 3/2 ! 4 I S/2 (S = 13, 11, and 9) transitions, respectively. The suitability of SBP:Nd (0.5 mol%) glass for use in solid-state lasers was demonstrated by its intense luminescence, high transition probability, high emission cross-section, optical gain, and luminescence branching ratio.

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Section: Thermal Properties Of Nd-doped Sbp Glassmentioning

confidence: 97%

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

et al. 2021

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“…In this study, we report a detailed analysis of electrical properties of iron phosphate (IP) glasses of the molar composition 40Fe 2 O 3 -60P 2 O 5 doped with boron oxide (IBP glasses). The structural properties of this glass system are relatively well examined [24][25][26]. It was shown that B 2 O 3 enters the glass network as BO 4 tetrahedral units and increases the chemical and thermal stability of the glass [24,25].…”

Section: Introductionmentioning

confidence: 99%

Polaronic Conductivity in Iron Phosphate Glasses Containing B2O3

et al. 2020

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We report on the electrical properties of glasses with nominal composition xB2O3–(100 − x)[40Fe2O3–60P2O5],x = 2–20, mol.%. The conduction transport in these glasses is polaronic and shows a strong dependence on Fe2O3 content and polaron number density. The changes in DC conductivity are found not to be directly related to B2O3, however structural changes induced by its addition impact frequency-dependent conductivity. All glasses obey Summerfield and Sidebottom procedures of scaling conductivity spectra indicating that the polaronic mechanism does not change with temperature. An attempt to produce a super-master curve revealed that shape of the conductivity dispersion is the same for glasses with up to 15.0 mol.% B2O3 but differs for glass with the highest B2O3 content. This result could be related to the presence of borate units in the glass network. Moreover, the spatial extent of localized polaron motions increases with the decrease of polaron number density, however, this increase shows a larger slope than for previously reported iron phosphate glasses most probably due to the influence of B2O3 on glass structure and formation of polarons. While Summerfield scaling procedure fails, Sidebottom scaling yields a super-master curve, which indicates that polaronic hopping lengths also change with changing polaron number density in these glasses.

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“…1. The absorption bands at (396 -431) cm -1 is assigned to be due to the vibrations of (P2O7) -4 groups (Q1 groups) [20], or can be related to vibrations of Na ions in their modifying sites [21].…”

Section: Ir Resultsmentioning

confidence: 99%

Structural and some physical properties of Sodium Boro-phosphate Glass Containing Mill Scale.

sayed¹

2021

Egypt. J. Chem.

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Sodium boro-phosphate glasses containing different amounts of mill scale (65% FeO and 35% Fe2O3) [an iron industry waste formed during the rolling process to produce steel plates] were prepared by the melt quenching technique. The structure and some physical properties of the prepared glasses were investigated using different tools. The amorphous phase of the prepared glass samples was confirmed from their X-ray diffraction. The experimental and empirical densities were found to increase, while the experimental and empirical molar volumes were found to decrease, as mill scale content was increased. By comparing both the experimental and empirical values of density and molar volume, the amorphous nature and short range order character of the studied glasses was confirmed. It was found also that all glass samples behave like semiconductor and both electronic and ionic conductivities were present in these glasses. The correlated barrier hopping model is the appropriate conduction mechanism. The conductivity was found to increase as mill scale content was increased from 10 to 25 mol%, then decreased at sample contains 30 mol% of mill scale, The IR analysis indicated that the iron cations occupy the glass network modifier positions, while the iron cations occupies the glass network former positions only in the sample containing 30 mol% of mill scale. It indicated also that phosphorous cations occupy mainly the tetrahedral coordination state. The volume, mass and molar magnetic susceptibility measurements exhibited gradual increase as mill scale content was increased in the sample composition and all the samples exhibit paramagnetic character.

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FTIR spectra and properties of iron borophosphate glasses containing simulated nuclear wastes

Cited by 47 publications

References 37 publications

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

Structural and spectroscopic investigations of neodymium‐doped strontium borophosphate glass

Polaronic Conductivity in Iron Phosphate Glasses Containing B2O3

Structural and some physical properties of Sodium Boro-phosphate Glass Containing Mill Scale.

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