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http://hdl.handle.net/10773/6146
Título: | Influence of the sol-gel growth parameters on the optical and structural properties on LiNbO3 samples |
Autor: | Graça, M.P.F. Valente, M.A. Peres, M. Cruz, A. Soares, M.J. Neves, A.J. Monteiro, T. Alves, E. Marques, C. |
Palavras-chave: | LiNbO3 Sol–gel growth process Structural analysis (XRD, RBS) Optical analysis (Raman spectroscopy, absorption, PL) |
Data: | Set-2007 |
Editora: | Elsevier |
Resumo: | We report on the structural, morphological and optical characterization of Er doped lithium niobate (LiNbO3) grown in a glass matrix prepared by sol–gel route. The samples were grown from a mixture with nominal composition of 91SiO2–4Li2O–4Nb2O5–1Er2O3 (Er:LN) and the crystallization process was followed up in the temperature range between 500 °C and 750 °C. The Er:LN samples start to crystallize at temperatures above 600 °C and besides the LiNbO3 crystalline phase sub micron ErNbO4 precipitates were identified by X-ray diffraction and Raman measurements. A comparison with glass matrices grown without NbO2 or Li2O was carry out in order to identify both the structural and optical properties of the Er:LN samples. The fingerprint emission lines of Er3+ ion in the Er:LN samples are discussed in terms of distinct crystalline environments for the Er ion in samples. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/6146 |
DOI: | 10.1016/j.msec.2006.07.037 |
ISSN: | 0928-4931 |
Aparece nas coleções: | DFis - Artigos |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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MSEC.pdf | versão pdf do editor | 643.06 kB | Adobe PDF |
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