Laser sintering and photoluminescence study of Tb-doped yttrium aluminum garnet ceramics

Santos, J.C.A.; Silva, E.P.; Souza, N.R.S.; Alves, Y.G.S.; Sampaio, D.V.; Kucera, Courtney; Jacobsohn, L.G.; Ballato, John; Silva, R.S.

doi:10.1016/j.ceramint.2018.11.048

Cited by 17 publications

(5 citation statements)

References 39 publications

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“…Four strong emission peaks are observed at 485, 548, 582, and 612 nm, due to Tb 3+ electronic transitions 5 D 4 → 7 F 6 , 5 D 4 → 7 F 5 , 5 D 4 → 7 F 4 , and 5 D 4 → 7 F 3 , respectively . The most intense peak is observed at 548 nm (green region), which is in good agreement with previously reported results. − …”

Section: Resultssupporting

confidence: 91%

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Panigrahi,

Berseneva,

Morrison

et al. 2024

Inorg. Chem.

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We report on the detailed structural analysis of a series of 11 new quaternary rare earths containing thiosilicates, AkRE 2 Si 2 S 8 (Ak = Ca and Sr; RE = La, Ce, Pr, Nd, Sm, Gd, and Tb), synthesized using the flux-assisted boron chalcogen mixture method. High quality crystals were grown and used to determine their crystal structures by single crystal X-ray diffraction. All members of the AkRE 2 Si 2 S 8 series crystallize in the trigonal crystal system with space group R3̅ c (space group no. 167). Polycrystalline powders were used for physical property measurements, including magnetic susceptibility, diffuse reflectance in the UV−visible range, and scintillation. Magnetic measurements indicated that CaRE 2 Si 2 S 8 (RE = Nd and Tb) exhibits paramagnetic behavior with a slightly negative Weiss constant. The band gaps of the materials were determined from diffuse reflectance data, and optical band gaps were estimated to be 2.5(1) and 2.9(1) eV for CaCe

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Section: Resultssupporting

confidence: 91%

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Panigrahi,

Berseneva,

Morrison

et al. 2024

Inorg. Chem.

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“…28,29 Although laser sintering of ceramics has been studied over decades, the sintering duration was typically a few minutes to about twenty minutes. [30][31][32] The reported laser sintering durations are comparable to the FAST and microwave sintering. In this paper, we demonstrate that the sintering duration of deposited alumina layer with about five hundred micrometer thickness can be shortened to a few tens of seconds under laser scanning.…”

Section: Introductionmentioning

confidence: 52%

“…Although laser sintering of ceramics has been studied over decades, the sintering duration was typically a few minutes to about twenty minutes 30–32 . The reported laser sintering durations are comparable to the FAST and microwave sintering.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐fast, selective, non‐melting, laser sintering of alumina with anisotropic and size‐suppressed grains

et al. 2021

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In this paper, we report an ultra‐fast sintering phenomenon of alumina achieved by the scanning laser irradiation method. Using CO2 laser irradiation, we found that micrometer‐sized alumina powder (d50 = 1.2 µm) can be sintered close to full density within a few tens of seconds. The microstructure of laser‐sintered alumina was different from that of the furnace‐sintered alumina. The relative density and grain size of the laser‐sintered alumina gradually decreased from the center of the laser beam to the edge. Anisotropy of the grain size was measured along and perpendicular to the scanning direction. This anisotropy decreased as the scanning speed decreased from 0.1 mm/s to 0.01 mm/s. The sintering master curve of grain size versus relative density, which reflects the sintering mechanism, was found to be affected by the laser scanning speed. When the laser scanning speed was 0.1 mm/s, grain size suppression was found for the almost fully dense alumina. However, at lower scanning speed (e.g., 0.01 mm/s), there was significant grain growth in the regions where the relative density was greater than 90%. These results clearly indicate that alumina can be sintered, in the solid‐state, to a high density in a short time using scanning laser and the microstructure is different from the furnace‐sintered alumina.

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“…4b). 9,32,[34][35][36][37] The bright green-light emitting belongs to the strongest transition 5 D 4 to 7 F 5 of largest probability for both forced electric dipole and magnetic dipole induced transitions. 13,36 Persistent luminescence property…”

Section: Photoluminescent Propertiesmentioning

confidence: 99%

La₂O₂CO₃:Tb³⁺ one-dimensional nanorod with green persistent luminescence

et al. 2020

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Laser sintering and photoluminescence study of Tb-doped yttrium aluminum garnet ceramics

Cited by 17 publications

References 39 publications

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Ultra‐fast, selective, non‐melting, laser sintering of alumina with anisotropic and size‐suppressed grains

La₂O₂CO₃:Tb³⁺ one-dimensional nanorod with green persistent luminescence

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Laser sintering and photoluminescence study of Tb-doped yttrium aluminum garnet ceramics

Cited by 17 publications

References 39 publications

Crystal Growth of Quaternary AkRE2Si2S8 (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Crystal Growth of Quaternary AkRE2Si2S8 (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Ultra‐fast, selective, non‐melting, laser sintering of alumina with anisotropic and size‐suppressed grains

La2O2CO3:Tb3+ one-dimensional nanorod with green persistent luminescence

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Product

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About

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

Crystal Growth of Quaternary AkRE₂Si₂S₈ (Ak = Ca and Sr; RE = La–Tb) Thiosilicates Using Flux-Assisted Boron Chalcogen Mixture Method: Exploring X-ray Scintillation, Luminescence, and Magnetic Properties

La₂O₂CO₃:Tb³⁺ one-dimensional nanorod with green persistent luminescence