The influence of air annealing on the microstructure and scintillation properties of Ce,Mg:LuAG ceramics

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F19%3A00497741" target="_blank" >RIV/68378271:_____/19:00497741 - isvavai.cz</a>

Výsledek na webu

<a href="http://hdl.handle.net/11104/0290249" target="_blank" >http://hdl.handle.net/11104/0290249</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1111/jace.16038" target="_blank" >10.1111/jace.16038</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The influence of air annealing on the microstructure and scintillation properties of Ce,Mg:LuAG ceramics

Popis výsledku v původním jazyce

The microstructures and optical properties of Ce,Mg:Lu3Al5O12 scintillator ceramics are investigated with particular focus on the effect of postannealing in air from 1000 to 1450°C. The formation of Al2O3 clusters after annealing above 1300°C is evidenced by scanning electron microscopy. The presence of this secondary phase is tentatively explained by the occurrence of Ce and Mg evaporation proved by inductive coupled plasma optical emission spectrometry measurements. Meanwhile, optical investigations including absorption, X‐ray induced luminescence, light yield, scintillation decay, and thermoluminescence prove the positive role of post‐annealing that leads to a brighter and faster scintillation emission. This behavior is associated to the removal of oxygen vacancies occurring during such treatments. In parallel, the partial conversion of Ce3+ ions into Ce4+ is also observed as a consequence of annealings and the role of Ce4+ ions in the scintillation process is discussed.n

Název v anglickém jazyce

The influence of air annealing on the microstructure and scintillation properties of Ce,Mg:LuAG ceramics

Popis výsledku anglicky

The microstructures and optical properties of Ce,Mg:Lu3Al5O12 scintillator ceramics are investigated with particular focus on the effect of postannealing in air from 1000 to 1450°C. The formation of Al2O3 clusters after annealing above 1300°C is evidenced by scanning electron microscopy. The presence of this secondary phase is tentatively explained by the occurrence of Ce and Mg evaporation proved by inductive coupled plasma optical emission spectrometry measurements. Meanwhile, optical investigations including absorption, X‐ray induced luminescence, light yield, scintillation decay, and thermoluminescence prove the positive role of post‐annealing that leads to a brighter and faster scintillation emission. This behavior is associated to the removal of oxygen vacancies occurring during such treatments. In parallel, the partial conversion of Ce3+ ions into Ce4+ is also observed as a consequence of annealings and the role of Ce4+ ions in the scintillation process is discussed.n

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/GA16-15569S" target="_blank" >GA16-15569S: Rychlé tenkovrstvé scintilátory pro 2D-zobrazování s vysokým rozlišením</a><br>

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

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

1551-2916

e-ISSN

—

Svazek periodika

102

Číslo periodika v rámci svazku

4

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

9

Strana od-do

1805-1813

Kód UT WoS článku

000459595500030

EID výsledku v databázi Scopus

2-s2.0-85053453697