Site-selective optical spectroscopy of Cr3+ doped non-stoichiometric green spinel MgO-2.6 Al2O3

被引：21
作者：
Garapon, C [1 ]
Brenier, A [1 ]
Moncorge, R [1 ]
机构：
[1] Univ Lyon 1, Lab Physicochim Mat Luminescents, CNRS, UMR 5620, F-69622 Villeurbanne, France
来源：
OPTICAL MATERIALS | 1998年 / 10卷 / 03期
关键词：
Cr3+ fluorescence; spinel; laser spectroscopy;
D O I：
10.1016/S0925-3467(98)00011-1
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Site-selective laser spectroscopy at low-temperature is used to analyse the fluorescence of Cr3+ in the non-stoichiometric green spinel MgO-2.6 Ala(2)O(3). Four main kinds of sites are characterized: several more or less distorted strong crystal field sites responsible for E-2 --> (4)A(2) emission lines around 690 nm with lifetimes of 20 to 5 ms and E-2 Splitting of 26 to 120 cm(-1) Cr3+ pairs emitting at about 710 nm, and medium and weak crystal field sites responsible for T-4(2) --> (4)A(2) broad band emissions at about 750 nm and 910 nm, respectively. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：177 / 189
页数：13
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