Structure and cation distribution of new ternary vanadates FeMg2V3O11 and FeZn2V3O11

被引：63

作者：

Wang, XD ^{[1
]}

Vander Griend, DA ^{[1
]}

Stern, CL ^{[1
]}

Poeppelmeier, KR ^{[1
]}

机构：

[1] Northwestern Univ, Dept Chem, Evanston, IL 60208 USA

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2000年 / 298卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

vanadate; ferrate; single crystal; structure; cation disorder;

D O I：

10.1016/S0925-8388(99)00662-3

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

FeMg2V3O11 crystals grown from a MgO/Fe2O3/V2O5 melt crystallize in the triclinic space group P-1 with parameters: a=6.434(1) Angstrom, b=6.806(1) Angstrom, c=10.085(1) Angstrom, alpha=97.44(1)degrees, beta=103.44(1)degrees, gamma=101.56(1)degrees and Z=2. FeZn2V3O11 crystals grown from a ZnO/Fe2O3/V2O5 melt also crystallize in P-1 with similar parameters: a=6.455(1) Angstrom, b=6.834(1) Angstrom, c=9.988(1) Angstrom, alpha=97.65(1)degrees, beta=102.61(1)degrees, gamma=101.26(1)degrees and Z=2. Both are isostructural with GaZn2V3O11, and susceptibility measurements reveal that all iron is high spin d(5). In FeMg2V3O11, Fe3+ is distributed non-statistically with Mg2+ on octahedral and bipyramidal sites, in FeZn2V3O11, Fe3+ is found only on the octahedral sites and Zn2+ exclusively occupies the bipyramidal sites. (C) 2000 Published by Elsevier Science S.A. All rights reserved.

引用

页码：119 / 124

页数：6

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