Effect of Sintering Additives on the Sintering and Spectral-Luminescent Characteristics of Quaternary GYAGG:Ce Scintillation Ceramics

Karpyuk, P.; Shurkina, A.; Kuznetsova, Daria; Smyslova, V.; Dubov, Valery; Dosovitskiy, G.; Korzhik, M.; Retiviv, V.; Bondarev, Alexander L.

doi:10.1007/s11664-022-09885-0

Cited by 5 publications

(11 citation statements)

References 38 publications

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“…To obtain the ceramics with a minimum number of residual pores, sintering additives are used, which, when combined with a precursor, can affect the sintering process [ 149 ] and references there.…”

Section: Producing and Utilizing Of The Precursorsmentioning

confidence: 99%

Compositionally Disordered Crystalline Compounds for Next Generation of Radiation Detectors

et al. 2022

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The review is devoted to the analysis of the compositional disordering potential of the crystal matrix of a scintillator to improve its scintillation parameters. Technological capabilities to complicate crystal matrices both in anionic and cationic sublattices of a variety of compounds are examined. The effects of the disorder at nano-level on the landscape at the bottom of the conduction band, which is adjacent to the band gap, have been discussed. The ways to control the composition of polycationic compounds when creating precursors, the role of disorder in the anionic sublattice in alkali halide compounds, a positive role of Gd based matrices on scintillation properties, and the control of the heterovalent state of the activator by creation of disorder in silicates have been considered as well. The benefits of introducing a 3D printing method, which is prospective for the engineering and production of scintillators at the nanoscale level, have been manifested.

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Section: Producing and Utilizing Of The Precursorsmentioning

confidence: 99%

Compositionally Disordered Crystalline Compounds for Next Generation of Radiation Detectors

et al. 2022

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“…Therefore, it is necessary to introduce other elements with medium ionic radii into the garnet structure to make it stable. For quaternary garnet, (Gd,Y,Ce) 3 (Ga,Al) 5 O 12 (GYGAG:Ce) is one of the most notable materials [22][23][24][25][26]. In 2010, Cherepy et al [2] prepared a series of GYGAG:Ce ceramics using nanopowders synthesized by flame spray pyrolysis (FSP) method and found that the (Gd,Y/Ga,Al) ratio was critical to achieve good phase stability and transmittance.…”

Section: Introduction mentioning

confidence: 99%

Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression

Zhu,

Wu,

Beitlerova

et al. 2023

Journal of Advanced Ceramics

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Y,Ce) 3 (Y x Ga 1−x ) 2 GaAl 2 O 12 (GYGAG:Ce) scintillation ceramics with different Y excess, where x = 0.005−0.08, were fabricated by the solid-state reaction method. The effects of stoichiometry on the phase composition, optical quality, and microstructure of GYGAG:Ce ceramics were analyzed. GYGAG:Ce ceramics have a pure garnet phase and obtain good in-line transmittance when x < 0.04, while more Y excess leads to the creation of the secondary phase. The change of x value influences the sintering behavior of the GYGAG:Ce ceramics: The excess of Y works as the self-sintering aid and significantly reduces the sintering temperature of ceramics. When x = 0.01-0.04, the X-ray excited luminescence (XEL) spectra and light yields of GYGAG:Ce ceramics are similar. The fast scintillation decay time and afterglow intensity of GYGAG:Ce ceramics show a slight decrease with increasing x value. Finally, additional 50-500 ppm MgO and 100-500 ppm CaO were introduced to the GYGAG:Ce ceramic with x = 0.04, and both were found to significantly increase the fast scintillation component and reduce the afterglow intensity by two orders of magnitude to 0.01% after X-ray cut-off.

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“…Obviously, the key properties of garnet ceramics depend on the chemical composition and the perfection of the oxide matrix [12,14,15], the chosen activators [28][29][30][31], technological factors [19,[30][31][32][33], synthesis conditions [8] and post-processing treatment [31]. Another important factor is the nature and a concentration of impurities which come in the ceramics at different stages of the technology.…”

Section: Introductionmentioning

confidence: 99%

“…Another important factor is the nature and a concentration of impurities which come in the ceramics at different stages of the technology. There are a plenty of publications describing the influence of cations of various metals, such as alkali [32] and alkaline earth elements [9,16,17,31,33,34], elements of the third [18,20] and fourth [34] groups. The effect of silicon [22,23,[33][34][35] and boron [33,36] additives has been also well clarified.…”

Section: Introductionmentioning

confidence: 99%

“…There are a plenty of publications describing the influence of cations of various metals, such as alkali [32] and alkaline earth elements [9,16,17,31,33,34], elements of the third [18,20] and fourth [34] groups. The effect of silicon [22,23,[33][34][35] and boron [33,36] additives has been also well clarified. Silicon is a widely used sintering additive [ [33] and refs therein], which is utilized to prepare transparent or translucent garnet ceramics.…”

Section: Introductionmentioning

confidence: 99%

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Effect of a Phosphorus Additive on Luminescent and Scintillation Properties of Ceramics GYAGG:Ce

et al. 2023

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The production of the scintillation ceramics can require the utilization of the phosphorus compounds at certain stages of 3D-printing, such as vat polymerization, applied for the formation of green bodies before sintering. The effect of phosphorus additive on the microstructure, optical, and scintillation parameters of Gd1.494Y1.494 Ce0.012Al2Ga3O12 (GYAGG:Ce) ceramics obtained by pressureless sintering at 1650 °C in an oxygen atmosphere was investigated for the first time. Phosphorus was introduced in the form of NH4H2PO4 into the initial hydroxocarbonate precipitate in a wide concentration range (from 0 to 0.6 wt.%). With increasing of phosphorus concentration, the density and the optical transmittance of garnet ceramics show a decrease, which is caused by an increase in the number of pores and inclusions. The light yield of fast scintillation, which is caused by Ce3+ ions, was found to be affected by the phosphorus additive as well. Moreover, an increase in phosphorescence intensity was recognized.

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Effect of Sintering Additives on the Sintering and Spectral-Luminescent Characteristics of Quaternary GYAGG:Ce Scintillation Ceramics

Cited by 5 publications

References 38 publications

Compositionally Disordered Crystalline Compounds for Next Generation of Radiation Detectors

Compositionally Disordered Crystalline Compounds for Next Generation of Radiation Detectors

Compositional regulation of multi-component GYGAG:Ce scintillation ceramics: Self-sintering-aid effect and afterglow suppression

Effect of a Phosphorus Additive on Luminescent and Scintillation Properties of Ceramics GYAGG:Ce

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