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
收藏
页码：1239 / 1245
页数：7
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