Luminescence properties of Eu3+-doped Lanthanum gadolinium hafnates transparent ceramics
Source abstract
Abstract
Abstract Eu3+-doped Lanthanum gadolinium hafnates (La0.8Gd1.2Hf2O7) transparent ceramics with different Eu3+ concentration were fabricated by vacuum sintering. XRD results showed all the ceramics are cubic pyrochlore structure. The effects of annealing process on in-line transmittance and luminescence behavior of the Eu3+-doped La0.8Gd1.2Hf2O7 transparent ceramics were investigated. Before annealing, the in-line transmittance of the ceramics was low and the luminescence intensity was weak. As Eu3+ doping content increased, the transmittance as well as the luminescence intensity decreased. This was ascribed to oxygen vacancy and other defects in the ceramics resulted from the vacuum sintering. After annealing, the transmittance and luminescence intensity were raised, indicating the elimination of oxygen vacancy. Moreover, with the increase of Eu3+ doping content from 1 at% to 10 at%, the luminescence intensity increased without concentration quenching.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nuclear materials and radiation effects · Luminescence Properties of Advanced Materials · Advanced Condensed Matter Physics
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Development of the HiLightTM scintillator for computed tomography medical imaging10.1016/S0168-9002(03)01022-2 ↗
2. A scintillator Gd2O2S: Pr,Ce, F for X-ray computed tomography10.1149/1.2097566 ↗
3. V.G. Tsoukala, C.D. Greskovich, Hole-trap-compensated scintillator material, US patent, 5318722, 1994.
4. A new lutetia-based ceramic scintillator for X-ray imaging10.1016/S0168-9002(02)00556-9 ↗
5. Evaluation of properties of YAG (Ce) ceramic scintillators10.1109/TNS.2005.856757 ↗
6. Luminescence and scintillation properties of YAG: Ce single crystal and optical ceramics10.1016/j.jlumin.2006.05.004 ↗
7. Radiation detector materials: an overview10.1557/JMR.2008.0319 ↗
8. Improvement of ceramic YAG(Ce) scintillators to (YGd)3Al5O12(Ce) for gamma-ray detectors10.1016/j.nima.2007.04.173 ↗
9. Fabrication of transparent cerium-doped lutetium aluminum garnet (LuAG: Ce) ceramics by a solid-state reaction method10.1111/j.1551-2916.2005.00554.x ↗
10. The radiation hardness of Pr:LuAG scintillating ceramics10.1016/j.ceramint.2013.09.052 ↗
11. Scintillation properties of SrHfO3:Ce3+ and BaHfO3:Ce3+ ceramics10.1109/TNS.2007.896343 ↗
12. Effect of microstructure on the radioluminescence and transparency of Ce-doped strontium hafnate ceramics10.1016/j.optmat.2010.08.013 ↗
13. La2Hf2O7:Ti4+ ceramic scintillator for x-ray imaging10.1557/JMR.2005.0073 ↗
14. Spectroscopic studies of nanopowder and nanoceramics La2Hf2O7:Pr scintillator10.1111/jace.12788 ↗
15. Fabrication and properties of La2-xGdxHf2O7 transparent ceramics10.1016/j.jlumin.2014.12.066 ↗
16. First-principles studies of Ce-doped RE2M2O7 (RE = Y, La; M = Ti, Zr, Hf): a class of non-scintillators10.1063/1.3561490 ↗
17. Combustion synthesis and photoluminescence of Eu3+, Dy3+-doped La2Zr2O7 nanocrystals10.1016/j.jpcs.2006.05.004 ↗
18. Thermophysical properties of rare-earth-stabilized zirconia and zirconate pyrochlores as surrogates for actinide-doped zirconia10.1007/s10765-007-0232-9 ↗
19. Enhanced Eu3þ emission of Eu2+/Eu3+:(Y0.9La0.1)2O3 transparent ceramics synthesized in H2 atmosphere for modern lighting and display10.1016/j.matlet.2014.05.122 ↗