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Preparation and Luminescence Property of LaMgAl11O19

Preparation and Luminescence Property of LaMgAl11O19

Authors :
Minghao Fang
Yan Gai Liu
Zhao Hui Huang
Xin Min
Source :
Key Engineering Materials. 519:224-227
Publication Year :
2012
Publisher :
Trans Tech Publications, Ltd., 2012.

Abstract

Lanthanum magnesium hexaaluminate (LaMgAl11O19, LMA) has attracted much interest as its widely used in solid state lasers, TV phosphors and fluorescent lamps. In this paper, LaMgAl11O19 ceramic was pressureless sintered at 1650 °C for 10 h in air atmosphere using LaMgAl11O19 powders prepared by solid-state reaction at 1500 °C for 4 h. The result indicated that the synthesis temperature of LaMgAl11O19 powders was about 1500 °C. The LMA ceramic sample was dense and had a microstructure of platelet-like gains. The excitation spectrum shows two wide bands with the peaks at about 254 nm and 265 nm by monitoring the strongest 362 nm emission, and the emission spectra is consisted of a broad band emission with their peaks near 362 nm with a half-width about 5 nm exciting with 265 nm wavelength.

Details

ISSN :
16629795
Volume :
519
Database :
OpenAIRE
Journal :
Key Engineering Materials
Accession number :
edsair.doi...........6bb887bc0e2029ffb8cccdef440f523a
Full Text :
https://doi.org/10.4028/www.scientific.net/kem.519.224