Correlation between the spectroscopic and structural properties with the occupation of Eu3+ sites in powdered Eu3+-doped LiTaO3 prepared by the Pechini method

被引：24

作者：

Gasparotto, G. ^{[1
]}

Cebim, M. A. ^{[1
]}

Goes, M. S. ^{[1
]}

Lima, S. A. M. ^{[1
]}

Davolos, M. R. ^{[1
]}

Varela, J. A. ^{[1
]}

Paiva-Santos, C. O. ^{[1
]}

Zaghete, M. A. ^{[1
]}

机构：

[1] Sao Paulo State Univ, UNESP, Inst Quim, BR-14800900 Sao Paulo, Brazil

来源：

JOURNAL OF APPLIED PHYSICS | 2009年 / 106卷 / 06期

关键词：

RARE-EARTH IONS; LATTICE LOCATION; LINBO3; CRYSTALS; LUMINESCENCE; DEFECTS; SILICON;

D O I：

10.1063/1.3204967

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this work we studied the structural and optical properties of lithium tantalate (LiTaO3) powders doped with Eu3+ ions. We have examined the different sites occupied by the rare earth ion through the correlation of the DRX data analyzed with the Rietveld method and some spectroscopic parameters derived from the Eu3+ luminescence. Adirect relation was established between the lattice parameters and the "occupation fraction" of Eu3+ in each LiTaO3 site. The occupation fraction was set as the relative population of Eu3+ ions for each site obtained by means of the intensity, baricenter, and the spontaneous emission coefficients of the D-5(0)-> F-7(0) transitions. We concluded that the unit cell parameter a presents the same behavior of the Eu3+ occupation fraction in Ta5+ sites as a function of the Eu3+ content in LiTaO3. The same was observed for the variation in Eu3+ occupation fraction in the Li+ site and the unit cell parameter c with the Eu3+ content. (C) 2009 American Institute of Physics. [doi: 10.1063/1.3204967]

引用

页数：5

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