Crystallization and spectroscopic properties of Eu-doped CaF2 nanocrystals in transparent oxyfluoride glass-ceramics

被引：39
|
作者：
Secu, M. [1 ]
Secu, C. E. [1 ]
Polosan, S. [1 ]
Aldica, G. [1 ]
Ghica, C. [1 ]
机构：
[1] Natl Inst Mat Phys, Bucharest 077125, Romania
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2009年 / 355卷 / 37-42期
关键词：
Crystallization; Glass ceramics; Nanocrystals; Absorption; Luminescence; Time resolved measurements; Aluminosilicates; Rare-earths in glasses; LUMINESCENCE;
D O I：
10.1016/j.jnoncrysol.2009.04.062
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：
Transparent oxyfluoride glass-ceramic in the system SiO2-Al2O3-CaF2-EuF2 containing Eu-doped CaF2 nanocrystals were produced by using the controlled crystallization of melt-quenched glass. X-ray diffraction and transmission electron microscopy data have revealed the formation of the CaF2 nanocrystals of about 65 nm size. Photoluminescence spectra have shown an increase of the splitting of the luminescences associated to the Eu3+ ion along with annealing time which is consistent with the Eu3+ environment evolving from a glassy to a crystalline state. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：1869 / 1872
页数：4
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