J. Phys. IV France 123 (2005) 35-39
Elaboration and characterization of europium doped ceria solid solutionsL. Aneflous1, S. Villain2, J.R. Gavarri2, J. Musso2, H. Benyaich1, A. Benlhachemi1 and A. Marrouche1
1 Laboratoire de Chimie de Solide, Univ. Ibn Zohr, Fac. Sc., BP. 8106, 80000 Agadir, Maroc
2 Laboratoire L2MP, Univ. Toulon-Var, BP. 132, 83957 La Garde, France
Cerium dioxides doped or substituted by europium have been prepared using low (320 C) and high temperature (1350 C) processes. The Eu substituted ceria phase obtained at high temperature is a solid solution Ce EuO .The stoechiometry of the pure CeO ceria was controlled using an impedance spectroscopy approach permitting evaluation of sample stoechiometry (z). The various substituted samples were studied using X-ray diffraction. In initial low temperature [ 1/2 O3 - CeO2] systems, the ceria particles are nanosized (D = 4.3 nm). In sintered samples, a linear variation of cell parameters is clearly observed.
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