Stoichiometric modulation and scintillation property characterization of Ce,Ca:LuAG ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F24%3A00588182" target="_blank" >RIV/68378271:_____/24:00588182 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1111/jace.19953" target="_blank" >https://doi.org/10.1111/jace.19953</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.19953" target="_blank" >10.1111/jace.19953</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stoichiometric modulation and scintillation property characterization of Ce,Ca:LuAG ceramics

Popis výsledku v původním jazyce

Due to the huge difference in the solubility-product constants (Ksp) between the precipitates of Lu and Al, the synthesis of lutetium aluminum garnet (Lu3Al5O12, LuAG) nanopowders by coprecipitation method is prone to Lu loss, resulting in the creation of Al2O3 secondary phase. In this work, coprecipitated (Ce0.001Ca0.0015Lu(0.9975+x%))3Al5O12 (x = 0, 0.9, 1.2, 1.5) nanopowders with different starting stoichiometries are synthesized and combined with vacuum pre-sintering and hot-isostatic pressing to fabricate scintillating ceramics. The effect of compensated Lu content on the phase composition, microstructure, optical properties, and scintillation performance of ceramics is analyzed. The complete elimination of the secondary phase requires an additional compensation of 1.2% of Lu, which gives the best transmittance in ceramics. When x = 1.5, excessive Lu forms LuAl antisite defect, leading to the decrease of both light yield and intensity of the fast scintillation component.

Název v anglickém jazyce

Stoichiometric modulation and scintillation property characterization of Ce,Ca:LuAG ceramics

Popis výsledku anglicky

Due to the huge difference in the solubility-product constants (Ksp) between the precipitates of Lu and Al, the synthesis of lutetium aluminum garnet (Lu3Al5O12, LuAG) nanopowders by coprecipitation method is prone to Lu loss, resulting in the creation of Al2O3 secondary phase. In this work, coprecipitated (Ce0.001Ca0.0015Lu(0.9975+x%))3Al5O12 (x = 0, 0.9, 1.2, 1.5) nanopowders with different starting stoichiometries are synthesized and combined with vacuum pre-sintering and hot-isostatic pressing to fabricate scintillating ceramics. The effect of compensated Lu content on the phase composition, microstructure, optical properties, and scintillation performance of ceramics is analyzed. The complete elimination of the secondary phase requires an additional compensation of 1.2% of Lu, which gives the best transmittance in ceramics. When x = 1.5, excessive Lu forms LuAl antisite defect, leading to the decrease of both light yield and intensity of the fast scintillation component.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

<a href="/cs/project/GA21-17731S" target="_blank" >GA21-17731S: Pokročilé scintilátory na bázi scandiem admixovaných granátů</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of the American Ceramic Society

ISSN

0002-7820

e-ISSN

1551-2916

Svazek periodika

107

Číslo periodika v rámci svazku

10

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

6844-6852

Kód UT WoS článku

001247170600001

EID výsledku v databázi Scopus

2-s2.0-85196121483