Lanthanum ferromanganites thin films by sol–gel process. Influence of the organic/inorganic R ratio on the microstructural properties

Pascal Lenormand (1) , Simone Castillo (1) , José-Ramon Gonzalez (1) , Christel Laberty-Robert (1) , Florence Ansart (1)

1 CIRIMAT - Centre interuniversitaire de recherche et d'ingenierie des matériaux

Strontium-substituted lanthanum ferromanganites, La0.8Sr0.2Mn1−yFeyO3+δ (y=0, 0.2, 0.5, 0.8, 1), LSMF2Y (Y=10y) for solid oxide fuel cell (SOFC) cathode applications have been synthetized by a polymeric sol–gel route and deposited on YSZ substrates by a dip-coating process. The influence of the sol synthesis parameters (metal composition, organic and metal salt concentrations) on the thin film microstructure has been investigated. In this study, it has been shown that the organic/inorganic ratio, called R, appears as a key parameter to control the microstructural properties of final coatings.

Mots clés: Lanthanum ferromanganite oxide; LSMF perovskite; Sol–gel; Thin films

Domaines: Matériaux

Pascal Lenormand, Simone Castillo, José-Ramon Gonzalez, Christel Laberty-Robert, Florence Ansart. Lanthanum ferromanganites thin films by sol–gel process. Influence of the organic/inorganic R ratio on the microstructural properties. Solid State Sciences, 2005, 7 (2), pp.159-163. ⟨10.1016/j.solidstatesciences.2004.10.019⟩. ⟨hal-03601418⟩