Preparation and Characterization of Non-Stoichiometric Yttrium Aluminum Garnet (YAG) with Antisite Defects as a Potential Scintillator

Author

Lin-Lin Zhu ; Zhi-jun Zhang ; Bi-Qiu Liu ; Man-Lian Huang ; Chen-Yang Wang ; Hao-Hong Chen ; Zhen-Yong Man ; Jing-Tai Zhao

Author_Institution

Key Lab. of Transparent Opto-Functional Inorg. Mater., Shanghai Inst. of Ceramics, Shanghai, China

Volume

61

Issue

1

fYear

2014

fDate

Feb. 2014

Firstpage

312

Lastpage

315

Abstract

Non-stoichiometric YAG powder samples were prepared via a simple sol-gel combustion method by introducing antisite defects Y_Al,16a intentionally. The investigation of structure and luminescence properties confirmed that the antisite defects with different concentrations can be created through adjusting the composition in YAG at relatively low (1000°C) temperature. The X-ray excited luminescence and vacuum ultra-violet spectroscopies show that the luminescence intensity of non-stoichiometric YAG increases with increasing antisite defects concentration, which is much stronger than that of the stoichiometric counterpart under the same conditions. It indicates that non-stoichiometric YAG with antisite defects Y_Al,16a might be used as a potential candidate for scintillator.

Keywords

EXAFS; X-ray diffraction; aluminium compounds; antisite defects; ceramics; combustion synthesis; powders; sol-gel processing; stoichiometry; ultraviolet spectra; yttrium compounds; X-ray excited luminescence; YAG; antisite defects; luminescence intensity; luminescence properties; nonstoichiometric yttrium aluminum garnet; powder; scintillator; sol-gel combustion method; structural properties; temperature 1000 degC; vacuum ultraviolet spectroscopies; Absorption; Crystals; Garnets; Luminescence; Powders; Temperature measurement; Yttrium; Antisite defects; YAG; non-stoichiometric; scintillator;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/TNS.2013.2291067

Filename

6704847