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Preparation and Luminescence Property of LaMgAl11O19
Preparation and Luminescence Property of LaMgAl11O19
- 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.
- Subjects :
- Materials science
Mechanical Engineering
Analytical chemistry
Mineralogy
chemistry.chemical_element
Phosphor
Microstructure
Laser
law.invention
Wavelength
chemistry
Mechanics of Materials
law
visual_art
Lanthanum
visual_art.visual_art_medium
General Materials Science
Emission spectrum
Ceramic
Luminescence
Subjects
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