Preparation, structural characterization and Mossbauer study of the CuFe1-xVxO2 (0 ≤ x ≤ 0.67) delafossite-type solid solution

被引：15

作者：

El Ataoui, K

Doumerc, JP

Ammar, A

Gravereau, P

Fournès, L

Wattiaux, A

Pouchard, M

机构：

[1] Univ Cadi Ayyad, Fac Sci Semlalia, Lab Chim Solide Mineral, Marrakech, Morocco

[2] CNRS, ICMCB, F-33608 Pessac, France

来源：

SOLID STATE SCIENCES | 2003年 / 5卷 / 09期

关键词：

delafossite oxide; redox equilibrium; Mossbauer resonance; copper iron(III) vanadium(III) oxide;

D O I：

10.1016/S1293-2558(03)00149-3

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The stability of trivalent M cations in CuMO2 delafossites is reviewed in terms of redox equilibrium. Whereas CuVO2 does not exist, a CuFe1-xVxO2 (0 less than or equal to x less than or equal to 0.67) solid solution was synthesized from metals and binary oxides. Mossbauer resonance unambiguously showed that iron and hence vanadium atoms are trivalent, which was not a priori expected. Of course, the vanadium concentration is limited, in agreement with the reasons explaining the inexistence Of CuVO2 in terms of a too strong reducing power of V3+. (C) 2003 Editions scientifiques et medicales Elsevier SAS. All rights reserved.

引用

页码：1239 / 1245

页数：7

共 20 条

[1] ELECTRONIC-STRUCTURE OF MOTT INSULATORS [J].