Fabrication and scintillation properties of Pr:Lu3Al5O12 transparent ceramics from co-precipitated nanopowders

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F20%3A00533013" target="_blank" >RIV/68378271:_____/20:00533013 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.1016/j.jallcom.2019.152885" target="_blank" >https://doi.org/10.1016/j.jallcom.2019.152885</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.jallcom.2019.152885" target="_blank" >10.1016/j.jallcom.2019.152885</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Fabrication and scintillation properties of Pr:Lu3Al5O12 transparent ceramics from co-precipitated nanopowders

Popis výsledku v původním jazyce

In this work, 0.25 at%Pr:Lu3Al5O12 transparent ceramics were prepared from the coprecipitated nanopowders without any sintering aids. Ammonium hydrogen carbonate was used as precipitant and the influences of precipitant to metal ions molar ratio on nanopowders and ceramics were investigated. Excessive or insufficient precipitant will worsen the phase-purity and dispersity of the nanopowders. The nonuniform dissolution of the Lu and Al precipitants in the titration and washing process, which results in the nonstoichiometry of Al excess in the ceramics and deteriorates the optical quality. After optimizing the ratio of Lu/Al in raw powders, Pr:Lu3Al5O12 ceramics with the in-line transmittance above 80% in the visible band were obtained. The light yield is 7086 Ph/MeV and the energy resolution is 16.9% which is inferior to that of the good Pr:Lu3Al5O12 crystal. The low valent cation impurities in the raw material increase the concentration of Pr4+ and diminish the light yield.n

Název v anglickém jazyce

Fabrication and scintillation properties of Pr:Lu3Al5O12 transparent ceramics from co-precipitated nanopowders

Popis výsledku anglicky

In this work, 0.25 at%Pr:Lu3Al5O12 transparent ceramics were prepared from the coprecipitated nanopowders without any sintering aids. Ammonium hydrogen carbonate was used as precipitant and the influences of precipitant to metal ions molar ratio on nanopowders and ceramics were investigated. Excessive or insufficient precipitant will worsen the phase-purity and dispersity of the nanopowders. The nonuniform dissolution of the Lu and Al precipitants in the titration and washing process, which results in the nonstoichiometry of Al excess in the ceramics and deteriorates the optical quality. After optimizing the ratio of Lu/Al in raw powders, Pr:Lu3Al5O12 ceramics with the in-line transmittance above 80% in the visible band were obtained. The light yield is 7086 Ph/MeV and the energy resolution is 16.9% which is inferior to that of the good Pr:Lu3Al5O12 crystal. The low valent cation impurities in the raw material increase the concentration of Pr4+ and diminish the light yield.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

2020

Kód důvěrnosti údajů

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

Název periodika

Journal of Alloys and Compounds

ISSN

0925-8388

e-ISSN

—

Svazek periodika

818

Číslo periodika v rámci svazku

Mar

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

1-9

Kód UT WoS článku

000506166900056

EID výsledku v databázi Scopus

2-s2.0-85075329019