Single phase nanocrystalline La0.6Ca0.4MnO3 powder was synthesized by both the usual and a modified citrate gel precursor method, and the effects on the formation of homogeneous nano-sized powder with a perovskite structure were investigated. In the modified method, single phase La0.6Ca0.4MnO3 powder with an average particle size of 17.2 nm was obtained when the powder was pyrolyzed at 520°C for 2 h. Its specific surface area was 40.7 m2 g−1, about 4-fold larger than that of powder made by the usual citrate gel method. <alternatives> [...] </alternatives>
 Y. Teraoka, T. Harada, H. Furukawa, S. Kagawa, in: L. Guczi (Ed.), New Frontiers in Catalysis, Proceedings of the 10th International Congress on Catalysis, 19–24 July 1992, Budapest, Hungary (Elsevier, Amsterdam, 1993) 2649
 J.L.G. Fierro, L.G. Tejuca, In: J.L.G. Fierro (Ed.), Properties and Applications of Perovskite-Type Oxides (Marcel Dekker, New York, 1993)
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