Polymer-assisted synthesis and luminescence properties of MgAl2O4:Tb nanopowder

被引：17
作者：
Hassanzadeh-Tabrizi, S. A. [1 ]
机构：
[1] Islamic Azad Univ, Najafabad Branch, Dept Mat Engn, Esfahan, Iran
来源：
OPTICAL MATERIALS | 2011年 / 33卷 / 11期
关键词：
Nanostructures; MgAl2O4; Polyacrylamide gel method; Luminescence; LOW-TEMPERATURE SYNTHESIS; EMISSION ANALYSIS; POWDER; SPINEL; PHOTOLUMINESCENCE;
D O I：
10.1016/j.optmat.2011.04.011
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In the present work, terbium doped magnesium alluminate (MgAl2O4:Tb) nanopowder was synthesized by a polyacrylamide gel method. Structure, morphology and luminescence spectra were investigated by X-ray diffraction (XRD), thermogravimetric and differential thermal analysis (TG-DTA), scanning electron microscopy (SEM), and photoluminescence spectroscopy (PL) measurements. The results showed that the single-phase MgAl2O4 could be formed at a relatively low temperature about 800 degrees C without unreacted Al2O3 and MgO phases. Powders with nanosized microstructures were formed. The polyacrylamide gel method resulted in a powder with smaller particle size and fewer agglomerates than the conventional sol-gel method. Luminescence analysis indicated that, the prepared MgAl2O4:Tb powders had strong green emission with D-5(4)-F-7(5) as the most prominent group. The emission intensity increased with increasing the calcination temperature. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：1607 / 1609
页数：3
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