Journal
JOURNAL OF NON-CRYSTALLINE SOLIDS
Volume 284, Issue 1-3, Pages 68-72Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/S0022-3093(01)00381-7
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In this paper, we report on the results obtained from molecular dynamic simulation of a Eu3+-doped germanosilicate glass. This simulation provides further information on the structure. In particular it reveals a homogeneous distribution of SiO4 and GeO4 units, a decrease of defects compared to SiO2 and GeO2 glasses, and a trend to clustering of the doping ions. Using the modified crystal-field theory. the luminescence spectroscopic properties have been computed and comparison with experimental data has allowed a correlation of the spectral features with two main types of local environment depending on the coordination number and on the medium-range arrangement around the doping ions. (C) 2001 Elsevier Science B.V. All rights reserved.
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