Synthesis and characterization of CuFeO2+δ delafossite powders

被引：82

作者：

Mugnier, E

Barnabé A

Tailhades, P

机构：

[1] Laboratoire CIRIMAT/LCMIE, CNRS UMR5085, Université Paul Sabatier Toulouse III, 31062 Toulouse Cedex 4

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 5-6期

关键词：

delafossite; copper iron oxide; non-stoichiometry; spinel; ferrite;

D O I：

10.1016/j.ssi.2005.11.026

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：

Effects of oxygen off-stoichiometry have been investigated on CuFeO2+delta delafossite-type powders prepared by solid state reaction. Materials annealed at different temperatures under air atmosphere were compared. Thermogravimetric analysis coupled with X-ray structural analysis showed that a powdered CuFeO2 can be oxidized up to CuFeO2+delta with delta=0.18. Electrical measurements confirm the existence of oxidized CuFeO2+delta phases. Particular attention is paid to the correlation between oxidation process and phase stabilities in the CuFeO, and copper spinel phase system. (c) 2005 Elsevier B.V. All rights reserved.

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页码：607 / 612

页数：6

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