Effect of Fe2O3 doping on structure, physical-mechanical properties and luminescence performance of magnesium-aluminum-silicon based glass-ceramics

Liu, Taoyong; Huang, Qianxing; Liang, Haozhang; Liu, Piao; Luo, Zhiwei; Zhu, Ligang; Lu, Anxian

doi:10.1016/j.ceramint.2020.08.051

Cited by 11 publications

(7 citation statements)

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“…studied Fe 2 O 3 ‐doped aluminosilicate glass‐ceramics and observed an emission band around 500 nm. The authors observed fast decays with multiexponential behavior averaging lifetimes within 10.7–11.8 μs, thus the emission band was credited to tetrahedrally‐coordinated Fe 3+ 60 . Based on this survey of relevant literature, it appears plausible that the presence of Fe 3+ impurities can be at the origin of the PL properties of the original ISG (Figures 9 and 10).…”

Section: Resultsmentioning

confidence: 87%

“…The red band within 700 nm to 760 nm was in contrast to slower decay with longer lifetimes of the order of several ms and was credited to 4 T 1 (G) → 6 A 1 (S) transitions in Fe 3+ ions mainly with tetrahedral coordination 57 . Recently, Liu et al 60 . studied Fe 2 O 3 ‐doped aluminosilicate glass‐ceramics and observed an emission band around 500 nm.…”

Section: Resultsmentioning

confidence: 99%

“…The authors observed fast decays with multiexponential behavior averaging lifetimes within 10.7-11.8 μs, thus the emission band was credited to tetrahedrally-coordinated Fe 3+ . 60 Based on this survey of relevant literature, it appears plausible that the presence of Fe 3+ impurities can be at the origin of the PL properties of the original ISG (Figures 9 and 10). Nonetheless, comparison with the data for ISG-1 (Figures 11 and 12) and ISG-2 (Figures 13 and 14) indicates that the centers emitting in the original ISG are also found in the new specimens, which lack iron impurities.…”

Section: Pl Spectroscopy and Emission Dynamics Assessmentmentioning

confidence: 89%

“…On the other hand, Fe 3+ being a d 5 ion (like Mn 2+ ) has been reported to exhibit visible PL in crystalline hosts 54,55 as well as a variety of glasses [56][57][58][59][60] under different excitation conditions. Since the emission characteristics are highly dependent on the coordination environment, the assignments are not trivial but rather difficult to ascertain with confidence.…”

Section: Pl Spectroscopy and Emission Dynamics Assessmentmentioning

confidence: 99%

“…57 The red band within 700 nm to 760 nm was in contrast to slower decay with longer lifetimes of the order of several ms and was credited to 4 T 1 (G) → 6 A 1 (S) transitions in Fe 3+ ions mainly with tetrahedral coordination. 57 Recently, Liu et al 60 studied Fe 2 O 3 -doped aluminosilicate glass-ceramics and observed an emission band around 500 nm. The authors observed fast decays with multiexponential behavior averaging lifetimes within 10.7-11.8 μs, thus the emission band was credited to tetrahedrally-coordinated Fe 3+ .…”

Section: Pl Spectroscopy and Emission Dynamics Assessmentmentioning

confidence: 99%

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Physico‐chemical properties of international simple glass (ISG) nuclear waste simulants: Luminescence baseline study

2022

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Borosilicate glass has been adopted internationally for the treatment of nuclear waste with the object of long‐term stabilization through vitrification. Aiming to facilitate experimental comparisons across laboratories, the six‐component international simple glass (ISG) was developed as benchmark. The original ISG produced by Mo‐SCI Corporation (Rolla, MO) was distributed and characterized for different physical properties thus serving as reference for further studies. Still, photoluminescence (PL) properties, which may be useful for scrutinizing radiation‐induced damage, have not been reported. Further, the original ISG contained significant iron impurities, which may present interference in various studies (e.g., optical). Consequently, two new ISG analogs lacking iron impurities (labeled ISG‐1 [closest composition to original ISG] and ISG‐2 [some MgO added at expense of CaO]) were synthesized by Corning Inc. (Corning, NY) (also doped with lanthanum for subsequent corrosion tests involving atom probe tomography), which remain to be fully characterized. Accordingly, this work was undertaken to perform a comprehensive study comparing the three ISG specimens. Various characterizations were then performed on the pristine glasses: X‐ray diffraction and vibrational spectroscopy (structural properties); static‐leach product consistency test (PCT, dissolution behavior); dilatometry and calorimetry measurements (thermal properties); and optical absorption with Tauc and Urbach plots analysis, followed by PL spectroscopy with decay kinetics assessment (optical properties). While the general structural features appeared similar among the glasses, the deconvolution of Raman spectra suggested a lower degree of connectivity in the silica network for ISG‐2. In addition, some differences were indicated from the PCT results and thermal properties assessed, which were discussed based on compositional variations. Further on, the optical properties were shown to be the most distinct. The optical absorption of the original ISG was characterized by Fe2+/Fe3+ impurities not detected for ISG‐1 and ISG‐2. The glasses all exhibited two main PL features (∼1.8 and 2.5 eV) with multiexponential decay behavior apparently of intrinsic origin. In addition, ISG‐1 and ISG‐2 showed a third high‐energy (∼3.4 eV) fast‐decaying contribution tentatively credited to tin impurities, which appeared most significantly for ISG‐1. The results are expected to serve as baseline for future studies simulating the effects of radioactive element decay.

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Section: Resultsmentioning

confidence: 87%

Section: Resultsmentioning

confidence: 99%

Section: Pl Spectroscopy and Emission Dynamics Assessmentmentioning

confidence: 89%