Preparation and Luminescence Property of LaMgAl11O19

Xin Min; Ming Hao Fang; Yan Gai Liu; Zhao Hui Huang

doi:10.4028/www.scientific.net/KEM.519.224

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 519Preparation and Luminescence Property of...

Preparation and Luminescence Property of LaMgAl₁₁O₁₉

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.

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Key Engineering Materials (Volume 519)

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224-227

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.519.224

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Online since:

July 2012

Authors:

Xin Min, Ming Hao Fang, Yan Gai Liu, Zhao Hui Huang

Keywords:

LaMgAl₁₁O₁₉, Luminescence, Solid-State Method

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