Determination of the Ta and Nb ratio in LiNb1-xO3 by total reflection X-ray fluorescence spectrometry

被引：12

作者：

Fernández-Ruiz, R

Bermúdez, V

机构：

[1] Univ Autonoma Madrid, Fac Ciencias, Serv Interdept Invest, E-38049 Madrid, Spain

[2] Univ Autonoma Madrid, Dept Fis & Mat, Fac Ciencias, E-28049 Madrid, Spain

来源：

SPECTROCHIMICA ACTA PART B-ATOMIC SPECTROSCOPY | 2005年 / 60卷 / 02期

关键词：

TXRF; lithium niobate tantalate; XRD; lattice parameter;

D O I：

10.1016/j.sab.2004.11.014

中图分类号：

O433 [光谱学];

学科分类号：

0703 ; 070302 ;

摘要：

A procedure for evaluation of the mass ratio between Ta and Nb in LiNb1-xTaxO3 single crystals by total reflection X-ray fluorescence spectrometry (TXRF) is described. The developed procedure does not require chemical preparation of the samples and it proves to be fast (30 min for sample preparation and 10 min for analysis), precise (down 1% RSD) and easy to perform. To check the methodology, the lattice parameter of each LiNb1-xTaxO3 sample was determined by powder X-ray diffraction. While the a hexagonal lattice parameter remains constant, a strong and linear dependence of the c hexagonal lattice parameter with Ta content in molar percentage has been observed for the first time. (c) 2004 Elsevier B.V. All rights reserved.

引用

页码：231 / 235

页数：5

共 13 条

[1]

Fernández-Ruiz R, 2004, CHEM MATER, V16, P3593, DOI [10.1021/cm035061l, 10.1021/cm0350611]

[2] Determination of the rare-earth:Nb mass ratio in doped LiNbO3 by the TXRF technique [J].