6533b85cfe1ef96bd12bc7c6
RESEARCH PRODUCT
Peculiarities of luminescent properties of cerium doped YAG transparent nanoceramics
Darek HreniakWitold LojkowskiWieclaw StrekTadeusz ChudobaPiotr GluchowskiVladimir PankratovL. Shirmanesubject
RadiationMaterials scienceDopingAnalytical chemistrychemistry.chemical_elementSinteringMineralogyNanoceramicCeriumchemistryAttenuation coefficientvisual_artvisual_art.visual_art_mediumCeramicLuminescenceInstrumentationSingle crystaldescription
Abstract Optical and luminescence properties of transparent nanosized cerium doped Y 3 Al 5 O 12 (YAG:Ce) ceramics have been studied. YAG:Ce nanoceramics were obtained by means of low temperature and high pressure (LTHP) sintering method. Nanoceramic samples were sintered in the 2–8 GPa pressure range, whereas Ce 3+ concentration was varied in the 0.5–5 at. % range. It is shown that, in contrast to the single crystal, a strong rise of absorption coefficient was detected already at wavelength shorter than 400 nm in all nanoceramic samples studied. Furthermore, in nanoceramic samples unusual UV emission band near 3.1 eV was observed, which is not observed in the YAG:Ce single crystal. High pressure applied during nanoceramics sintering leads to significant changes in their optical and luminescence properties.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2010-03-01 | Radiation Measurements |