STRUCTURAL DESCRIPTION OF LA3NBO7

被引：65

作者：

KAHNHARARI, A

MAZEROLLES, L

MICHEL, D

ROBERT, F

机构：

[1] CTR ETUD CHIM MET,CNRS,UPR 2801,F-94407 VITRY,FRANCE

[2] UNIV PARIS 06,ELEMENTS TRANSIT LAB,CNRS,URA 419,F-75230 PARIS 05,FRANCE

来源：

JOURNAL OF SOLID STATE CHEMISTRY | 1995年 / 116卷 / 01期

关键词：

D O I：

10.1006/jssc.1995.1189

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The structure of La3NbO7 was refined on a single crystal prepared by the flux method (R = 0.029). The unit cell is orthorhombic, with lattice parameters a = 7.747(1) Angstrom, b = 11.149(1) Angstrom, c = 7.611(1) Angstrom and centrosymmetric space group Pnma, Z = 4. Similarly to the previous structural description proposed in the Cmcm space group (1), the stacking is described in terms of zigzag chains of NbO6 octahedra aligned along the a axis of the crystal. The lanthanum ions lie on two different sites, for which the coordination polyhedra consist in 7 or 8 oxygen neighbors and the Nb atoms are off-centered in their octahedra. (C) 1995 Academic Press, Inc.

引用

页码：103 / 106

页数：4

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