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Title: Structural and optical properties of Er3+ ion in sol-gel grown LiNbO3
Author: Graça, M.P.F.
Valente, M.A.
Peres, M.
Cruz, A.
Soares, M.J.
Neves, A.J.
Monteiro, T.
Alves, L.C.
Alves, E.
Keywords: Inorganic compounds
PZT ceramics, etc.
X-ray diffraction
Optical properties
Issue Date: 2007
Publisher: IOP
Abstract: Er-doped lithium niobate (LiNbO3) ceramics embedded in silica were grown by the sol–gel method. The dried gel 91SiO2–4Li2O–4Nb2O5–Er2O3 (mol%) was subsequently heat treated between 500 and 750 °C. X-ray diffraction and Raman spectroscopy have detected the crystallization of LiNbO3 and ErNbO4 in samples treated at temperatures above 600 °C. At least two Er-related optical centres have been identified by low-temperature optical absorption and photoluminescence studies. The dominant intra-ionic transition arises from the Er3+ ion, in C2v site symmetry, in the ErNbO4 lattice.
Peer review: yes
DOI: 10.1088/0953-8984/19/1/016213
ISSN: 0953-8984
Appears in Collections:DFis - Artigos
I3N-FSCOSD - Artigos

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