Published May 2017 | Version v1
Journal article Metadata-only

Effect of thermal annealing on scintillation properties of Ce:Gd2Y1Ga2.7Al2.3O12 under different atmosphere

Creators

  • 1. Chinese Academy of Sciences, Shanghai Institute of Ceramics, Shanghai (China)

Description

Cerium-doped 1% Ce:Gd2Y1Ga2.7Al2.3O12(GYGAG) single crystal samples grown via Czochralski method were annealed under air, O2 and N2 atmospheres from 350 to 1400 C. The X-ray excited luminescence spectra, energy spectra and UV as well as thermally stimulated luminescence (TSL) spectra were performed comparatively on ''as-grown'' and thermally annealed samples. It was found that the luminescence efficiency after annealing in air and O2 was significantly enhanced compared to the non-annealed samples and this phenomenon was suggested to be caused by the existence of some oxygen vacancies in the Ce:GYGAG crystals. And the oxygen vacancies in the as-grown GYGAG crystals can be effectively eliminated by means of annealing in O2 containing atmosphere without changing the luminescence mechanism. From the TSL curves before and after annealing, three traps within 77-650 K were found to be related to oxygen vacancies. (orig.)

Availability note (English)

Available from: http://dx.doi.org/10.1007/s00339-017-0997-z

Additional details

Identifiers

DOI
10.1007/s00339-017-0997-z;

Publishing Information

Journal Title
Applied Physics. A, Materials Science and Processing
Journal Volume
123
Journal Issue
5
Journal Page Range
p. 1-6
ISSN
0947-8396
CODEN
APAMFC

INIS

Country of Publication
Germany
Country of Input or Organization
Germany
INIS RN
48070435
Subject category
S36: MATERIALS SCIENCE; S46: INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY;
Resource subtype / Literary indicator
Numerical Data
Descriptors DEI
ABSORPTION SPECTRA; ALUMINIUM OXIDES; ANNEALING; CERIUM ADDITIONS; DOPED MATERIALS; EMISSION SPECTRA; EXPERIMENTAL DATA; FERRITE GARNETS; GADOLINIUM COMPOUNDS; GALLIUM OXIDES; GAMMA DETECTION; GLOW CURVE; KEV RANGE 100-1000; PULSES; RADIOLUMINESCENCE; SCINTILLATIONS; SOLID SCINTILLATION DETECTORS; TEMPERATURE DEPENDENCE; THERMOLUMINESCENCE; YTTRIUM COMPOUNDS
Descriptors DEC
ALLOYS; ALUMINIUM COMPOUNDS; CERIUM ALLOYS; CHALCOGENIDES; DATA; DETECTION; EMISSION; ENERGY RANGE; GALLIUM COMPOUNDS; HEAT TREATMENTS; INFORMATION; KEV RANGE; LUMINESCENCE; MATERIALS; MEASURING INSTRUMENTS; MINERALS; NUMERICAL DATA; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; RADIATION DETECTION; RADIATION DETECTORS; RARE EARTH ADDITIONS; RARE EARTH ALLOYS; RARE EARTH COMPOUNDS; SCINTILLATION COUNTERS; SPECTRA; TRANSITION ELEMENT COMPOUNDS