Photoluminescence of annealed LLGG:Cr3+ crystals under high pressure

被引：1
|
作者：
Kornylo, A.
Grinberg, M.
Lukasiewicz, T.
Swirkowicz, M.
机构：
[1] Univ Gdansk, Inst Expt Phys, PL-80952 Gdansk, Poland
[2] Inst Elect Mat Technol, PL-01919 Warsaw, Poland
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2006年 / 352卷 / 40-41期
关键词：
pressure effects; luminescence;
D O I：
10.1016/j.jnoncrysol.2006.07.010
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
High pressure photoluminescence has been used for analysis of lattice disorder in La2.7Lu2.29Cr0.01Ga3O12 and La2.32Lu2.59Cr0.02Ga3.07O12 crystals. Photoluminescence of samples before annealing and those annealed for 5 h in oxygen and hydrogen atmosphere at 923 K has been measured. The pressure dependence of Cr3+ luminescence has been used to obtain the crystal field distribution (lattice disorder) and its dependence on the thermal treatment. The distribution energy of the 4 T, state has been considered as a measure of disorder. Annealing in oxygen has been found to reduce the energies of T-4(2) states for all sites, and annealing in hydrogen - to increase these energies. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码：4174 / 4178
页数：5
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