J. Phys. IV France 07 (1997) C1-353-C1-354
Investigation of the SrFe1-xCoxO3 (0≤x≤1) Cubic Perovskites Obtained by Electrochemical OxidationL. Fournès, A. Wattiaux, A. Demourgues, P. Bezdicka, J.C. Grenier, M. Pouchard and J. Etourneau
Institut de Chimie de la Matière Condensée de Bordeaux, avenue du Dr. A. Schweitzer, 33608 Pessac cedex, France
The transition-metal perovskites SrFe1-xCoxO3 (0≤x≤1) are of a great interest because the high oxidation states of the transition-metal (Fe(IV), Co(IV)) can be stabilized. Moreover these compounds exhibit interesting magnetic properties. These oxygen stoichiometric phases have been prepared only under high oxygen pressures. A novel preparation method of these phases has been investigated using electrochemical oxidation of the SrFe1-xCoxO2.5 brownmillerite-type compounds [1-3]. The starting materials and the phases obtained after electrochemical processing have been characterized by X-ray powder diffraction, chemical analysis and 57Fe Mössbauer spectroscopy. Finally, the magnetic and transport properties have been studied.
© EDP Sciences 1997