MgF2-Based Luminescing Ceramics

Лисицын, В. М.; Голковский, М. Г.; Лисицына, Л. А.; Dauletbekova, А.; Мусаханов, Д. А.; Vaganov, V. A.; Тулегенова, А. Т.; Karipbayev, Zhakyp

doi:10.1007/s11182-019-01617-y

Cited by 14 publications

(3 citation statements)

References 7 publications

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“…This conclusion is consistent for both nanopowder-based synthesis and the synthesis from larger grain sizes. It is likely that in the region with the highest absorbed energy density [14][15][16][17][18][19][20][21], the rate of new YAG phase formation is so rapid that charged particles do not have the opportunity to leave the reactor zone before the decomposition of the initial particles occurs.…”

Section: Discussionmentioning

confidence: 99%

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

et al. 2023

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The quality of synthesized materials is affected by various factors such as the prehistory of substances used and the synthesis technology. Most methods for synthesizing luminescent ceramics based on metal oxides rely on high-temperature heating to facilitate the necessary exchange of elements between precursor particles. However, a promising alternative method involves the direct application of a powerful high-energy radiation flux, which stimulates different processes. The formation of ceramics through this method occurs in a highly ionized medium, which may produce different results from those achieved through thermal exposure. This paper reports the findings of a study that explores the relationship between the morphology and luminescent properties of YAG:Ce ceramics and the characteristics of Y2O3 and Al2O3 oxides used in the synthesis, such as dispersity and activator concentration. The results indicate that the morphology of the synthesized ceramic samples is significantly affected by the dispersity of the powder mixture used.

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Section: Discussionmentioning

confidence: 99%

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

et al. 2023

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“…It seems possible to use hard radiation to stimulate the reactions of mutual exchange of elements for the formation of a new phase. In [13], the possibility of radiation synthesis of luminescent ceramics based on MgF 2 was shown. A mixture of MgF 2 powders with an activator in the form of WO 3 powder under the action of a high-energy electron flow from an ELV 6 accelerator in 1 s was transformed into a ceramic with properties characteristic of a LiF:W scintillator [14].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Luminescence efficiency of cerium-doped yttrium aluminum garnet ceramics formed by radiation assisted synthesis

Alpyssova

Лисицын

Golkovski

et al. 2021

EEJET

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The variety of applications of yttrium-aluminum garnet (YAG)-based luminescent materials and the morphology necessary for these purposes required the development of many technologies for their synthesis. All synthesis technologies used are complex. The structural phase of yttrium-aluminum garnet is formed with any technology, at temperatures exceeding 1,500 °C. The starting materials for the synthesis are metal oxides of aluminum, yttrium and other oxides for activation and modification. It seems possible to use hard radiation to form a new phase. Radiation synthesis of ceramics is realized in less than 1 s, without the use of any additives and influences. The synthesis was carried out at the electron accelerator of the Institute of Nuclear Physics (Novosibirsk). In this work, we studied the spectral-kinetic and quantitative characteristics of luminescence for the first time obtained by the method of radiation synthesis of ceramic samples of yttrium-aluminum garnet doped with cerium with statistical processing of their values. The dependences of the reproducibility of the spectral characteristics of the luminescence of the samples on the preliminary preparation of the charge for synthesis have been investigated. Several cycles of luminophore brightness studies have been performed. It is shown that the obtained ceramics based on yttrium-aluminum garnet doped with cerium possesses the required spectral-kinetic properties, and the efficiency of conversion of the chip radiation into luminescence is achieved, which is comparable to that available in commercial phosphors. The maximum measured values of the position of the bands are from 553.5 to 559.6 nm. Brightness values range from 4,720 to 1,960 cd/m2. It was found that the main reason for the scatter in the characteristics of the luminescent properties of ceramics of yttrium-aluminum garnet, activated by cerium obtained by radiation assisted synthesis is the high rate of synthesis and, especially, the high rate of cooling of the samples.

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“…With their use, it is possible to process bulk materials with a thickness of several mm. The possibility of synthesizing refractory ceramics based on metal oxides and fluorides has already been shown [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Distribution in the material of the absorbed energy of a space-limited beam flow of high-energy electrons

Mussakhanov¹,

Лисицын²,

Голковский³

2022

8th International Congress on Energy Fluxes and Radiation Effects

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MgF2-Based Luminescing Ceramics

Cited by 14 publications

References 7 publications

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

Effect of Precursor Prehistory on the Efficiency of Radiation-Assisted Synthesis and Luminescence of YAG:Ce Ceramics

Luminescence efficiency of cerium-doped yttrium aluminum garnet ceramics formed by radiation assisted synthesis

Distribution in the material of the absorbed energy of a space-limited beam flow of high-energy electrons

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