Optical evidence of the zircon-type lanthanum orthovanadate

被引：6

作者：

Antic-Fidancev, E ^{[1
]}

Lemaitre-Blaise, M ^{[1
]}

Porcher, P ^{[1
]}

机构：

[1] CNRS, UPR 209, Lab Chim Met & Spect Terres Rares, F-92195 Meudon, France

来源：

ANNALES DE CHIMIE-SCIENCE DES MATERIAUX | 1998年 / 23卷 / 1-2期

关键词：

D O I：

10.1016/S0151-9107(98)80072-X

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The fluorescence spectra of the trivalent europium ion embedded in lanthanum orthovanadate in polycrystalline form reveal the existence of LaVO4 in its tetragonal form, i.e. having the zircon type structure. The lattice parameters of Eu3+ 10% : LaVO4 follow the linear variation vs the ionic radius in the rare earth series. The variation of the F-7(1), crystal field levels is connected to the crystal field (cf) parameter B-0(2), whose sign changes for LaVO4 : Eu3+. This feature suggests a method for characterizing a structural change of an isostructural series and for detecting the existence limit of the phase.

引用

页码：273 / 276

页数：4

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