Title
Structural characterization of erbium doped LAS glass ceramics obtained by glass melting technique
Author
Faculty/Department
Faculty of Sciences. Physics
Publication type
article
Publication
Lausanne ,
Subject
Physics
Source (journal)
Materials science forum. - Lausanne, 1984, currens
Volume/pages
555(2007) , p. 377-381
ISSN
0255-5476
ISI
000249653700060
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Samples of transparent glass-ceramics in the ternary system Li2O-Al2O3-SiO2 (LAS), with Er2O3 as a luminescent dopant, are investigated. The initial glass is obtained by the classical melting technique. In order to induce ceramization of the glass, TiO2 and ZrO2 are added in small amount as nucleating agents. The thermal treatments at 730 and 770 degrees C are carried out to promote formation of titanium zirconate solid solution precipitates. The spatial distribution of the precipitates in the material, their morphology, and their composition are investigated with TEM, HRTEM, HAADF-STEM, EELS and EFTEM. The results demonstrate that with the glass-melting preparation technique it is possible to achieve small nanoparticles with uniform distribution and higher number density than with the sol-gel glass preparation.
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