Preparation and optical properties of Co2+-doped Li2O-Ga2O3-SiO2 glass-ceramics

被引：0
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作者：
Duan, Xiulan [1 ]
Yuan, Duorong [1 ]
Cheng, Xiufeng [1 ]
Liu, Zhiqiang [1 ]
Zhang, Xiqing [1 ]
机构：
[1] State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China
来源：
Journal of Alloys and Compounds | 2008年 / 453卷 / 1-2期
关键词：
Transparent glass-ceramics containing Co2+:LiGa5O8 nanocrystals were prepared by heating the gel with composition of 4Li2O-8Ga2O3-88SiO2-0.2CoO (LGS) (mol%). When the heat-treatment temperature was 800 °C; the samples crystallized to LiGa5O8 nanocrystals with the size of 6 nm and exhibited a broad absorption band near 1500 nm; which is characteristic of tetrahedral Co2+ ions in crystals. The emission in the visible and near infrared (NIR) region was observed from the glass-ceramics and attributed to the 4T1(4P) &rarr 4A2(4F) and 4T1(4P) &rarr 4T2(4F) transitions of tetrahedral Co2+; respectively. © 2006 Elsevier B.V. All rights reserved;
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页码：379 / 381
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