najoNanosystems: Physics, Chemistry, MathematicsНаносистемы: физика, химия, математика2220-80542305-7971Университет ИТМО10.17586/2220-8054-2024-15-6-893-901najo-194Research ArticleCHEMISTRY AND MATERIALS SCIENCEХИМИЯ И НАУКА О МАТЕРИАЛАХEffect of nanostructuring of coprecipitated precursors on the morphology and scintillation properties of multication ceramics with a garnet structureВлияние наноструктурирования соосажденных прекурсоров на морфологию и сцинтилляционные свойства многокатионной керамики со структурой гранатаhttps://orcid.org/0000-0001-8475-2602СмысловаВ. Г.SmyslovaV. G.

Valentina G. Smyslova

Moscow, 123182

smyslovavg@gmail.comhttps://orcid.org/0000-0002-3649-2778РетивовВ. М.RetivovV. M.

Vasiliy M. Retivov

Moscow, 123182

vasilii_retivov@mail.ruhttps://orcid.org/0000-0002-5816-1582ДубовВ. В.DubovV. V.

Valery V. Dubov

Moscow, 123182

valery_dubov@mail.ruhttps://orcid.org/0000-0001-7263-5724ЕрмаковаЛ. В.ErmakovaL. V.

Lidia V. Ermakova

Moscow, 123182

ermakova_lv@nrcki.ruhttps://orcid.org/0000-0003-2343-2140ИвановВ. К.IvanovV. K.

Vladimir K. Ivanov

Moscow, 119071

van10@mail.ruhttps://orcid.org/0000-0003-0002-3483КарпюкП. В.KarpyukP. V.

Petr V. Karpyuk

Moscow, 123182

karpyuk_pv@nrcki.ruhttps://orcid.org/0000-0003-3622-173XКомендоИ. Ю.KomendoI. Yu.

Ilya Yu. Komendo

Moscow, 123182

komendo_iyu@nrcki.ruhttps://orcid.org/0000-0001-5538-1726ЛелековаД. Е.LelekovaD. E.

Daria E. Lelekova

Moscow, 123182

daria_kyznecova@inbox.ruМечинскийВ. А.MechinskyV. A.

Vitaly A. Mechinsky

Moscow, 123182

Minsk, 220030

vitaly.mechinsky@gmail.comВасильевА. Н.Vasil’evA. N.

Andrey N. Vasil’ev

Moscow, 119234

anv@sinp.msu.ruhttps://orcid.org/0009-0007-0850-988XИльюшинА. С.IlyushinA. S.

Artemii S. Ilyushin

Moscow, 119234

artyom2833@mail.ruhttps://orcid.org/0000-0003-3516-3953СоколовП. С.SokolovP. S.

Petr S. Sokolov

Moscow, 123182

sokolov_ps@nrcki.ruКоржикМ. В.KorzhikM. V.

Mikhail V. Korzhik

Moscow, 123182

Minsk, 220030

korjikmikhail@gmail.comNational Research Center “Kurchatov Institute”Russian FederationKurnakov Institute of General and Inorganic ChemistryRussian FederationNational Research Center “Kurchatov Institute”; “Institute for Nuclear Problems” of the Belarusian State UniversityRussian FederationSkobeltsyn Institute of Nuclear Physics, Moscow State UniversityRussian Federation202405062025156893901Copyright © Smyslova V.G., Retivov V.M., Dubov V.V., Ermakova L.V., Ivanov V.K., Karpyuk P.V., Komendo I.Y., Lelekova D.E., Mechinsky V.A., Vasil’ev A.N., Ilyushin A.S., Sokolov P.S., Korzhik M.V., 20252025Смыслова В.Г., Ретивов В.М., Дубов В.В., Ермакова Л.В., Иванов В.К., Карпюк П.В., Комендо И.Ю., Лелекова Д.Е., Мечинский В.А., Васильев А.Н., Ильюшин А.С., Соколов П.С., Коржик М.В.Smyslova V.G., Retivov V.M., Dubov V.V., Ermakova L.V., Ivanov V.K., Karpyuk P.V., Komendo I.Y., Lelekova D.E., Mechinsky V.A., Vasil’ev A.N., Ilyushin A.S., Sokolov P.S., Korzhik M.V.Данная работа распространяется под лицензией Creative Commons Attribution 4.0.This work is licensed under a Creative Commons Attribution 4.0 License.https://nanojournal.ifmo.ru/jour/article/view/194

Single-phase polycrystalline samples of the (Gd,Y)3Al2Ga3O12:Ce,Tb composition with a garnet structural type were obtained. Using various approaches to the preparation of the initial powders of hydroxycarbonate precursors and compaction methods, the grain size of the ceramics was varied. The scanning electron microscopy method was used to establish the features of the microstructure of the initial powders with different processing temperatures and the microstructure of the resulting ceramics. It is shown that an increase in the grain size of the ceramics and a decrease in the residual porosity gives a noticeable increase in optical transparency in the visible region of the spectrum, in which Ce3+ and Tb3+ ions emit during scintillation. The effect of intergrain boundaries of the ceramics on the diffusion features of nonequilibrium carriers, electrons and holes, as well as excitons formed during the absorption of ionizing radiation on the scintillation yield and energy resolution is considered.

Получены однофазные поликристаллические образцы состава (Gd,Y)3Al2Ga3O12:Ce,Tb со структурным типом граната. Используя различные подходы к подготовке исходных порошков гидроксокарбонатных прекурсоров и методов формования, производили варьирование размера зерна керамики. Методом сканирующей электронной микроскопии были установлены особенности микроструктуры исходных порошков с разной температурой обработки и микроструктуры получаемой керамики. Показано, что увеличение размера зерна керамики и снижение остаточной пористости даёт заметный прирост оптической прозрачности в видимой области спектра, в которой излучают ионы Ce3+ и Tb3+ в процессе сцинтилляции. Рассмотрено влияние межзёренных границ керамики на особенности диффузии неравновесных носителей, электронов и дырок, а также экситонов, образующихся при поглощении ионизирующего излучения на выход сцинтилляций и энергетическое разрешение.

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The authors declare that there are no conflicts of interest present.