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Changes in Optical Properties of Ce: YAG Crystals under Annealing and Irradiation Processing
Author(s) -
Kaczmarek S. M.,
DomianiakDzik G.,
RybaRomanowski W.,
Kisielewski J.,
Wojtkowska J.
Publication year - 1999
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/(sici)1521-4079(199909)34:8<1031::aid-crat1031>3.0.co;2-i
Subject(s) - cerium , irradiation , annealing (glass) , luminescence , materials science , dopant , doping , analytical chemistry (journal) , gamma irradiation , czochralski method , radiochemistry , nuclear chemistry , chemistry , optoelectronics , metallurgy , physics , chromatography , nuclear physics
Changes of optical properties of cerium doped YAG single crystals (0.05, 0.1, 0.2 at.% Ce, and 0.2 at.% Ce "+" 0.1at.% Mg) after thermal annealing at 1400°C in air or 1200°C in N 2 +H 2 mixture and subsequent g or proton irradiation were investigated. For initial Ce 3+ contents <0.05 at.% an increase and for Ce 3+ contents >0,05 at.% a decrease of the final Ce 3+ concentration was observed. Appropriate changes in luminescence of Ce: YAG crystals were observed as a consequence of dopant concentration changes. They were small after gamma‐irradiation of Ce: YAG crystals with Ce 3+ content >0,05at.% and reached about 100% after gamma‐irradiation of crystals with Ce 3+ content < 0.05 at.%.