Lifetime for 5D4→7F5 emission in heavily Tb3+-doped superparamagnetic glasses

被引：11
|
作者：
Hayakawa, T
Sato, K
Yamada, K
Kamata, N
Nishi, N
Maruyama, F
机构：
[1] Saitama Univ, Dept Funct Mat Sci, Urawa, Saitama 338, Japan
[2] Sumita Opt Glass Inc, R&D Div, Urawa, Saitama 338, Japan
来源：
SYNTHETIC METALS | 1997年 / 91卷 / 1-3期
关键词：
superparamagnetic glasses; terbium doping; emission;
D O I：
10.1016/S0379-6779(98)80059-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have investigated a relationship between the Verdet constant and the lifetime of the D-5(4) level in heavily Tb3+-doped superparamagnetic glasses. Around 40 K the lifetime for D-5(4)-->F-7(5) emission showed its maximum value in the same way as that of the Verdet constant. The correspondence was attributed to the enlarged size of magnetic clusters which enhanced the diffusion of the excitation energy among Tb3+ ions. Also, we observed that the lifetime was most strongly dependent on the applied magnetic field at the temperature where the enlargement of clusters appeared. (C) 1997 Elsevier Science S.A.
引用
收藏
页码：355 / 356
页数：2
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