Journal of the Ceramic Society of Japan
Online ISSN : 1882-1022
Print ISSN : 0914-5400
ISSN-L : 0914-5400
Preparation of (La1-xSrx)MnO3 by Coprecipitation Method
Motoki UEHARAKoichiro TAKAHASHIToru ASAKASadao TSUTSUMI
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1998 Volume 106 Issue 1240 Pages 1248-1251

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Abstract

A coprecipitate of the carbonate was first obtained by the titration of sodium carbonate into solution in which MnO, SrCO3, and La2O3 were dissolved by hydrochloric acid. Heating the coprecipitate for 1h at 600°C, 7h at 1000°C, and successively 10h at 1300°C produced a sintered body of (La1-xSrx)MnO3, which was observed by electron microscopy and analyzed by X-ray powder diffratoetory. As a result, it was clarified that the coprecipitation method enables to obtain the single phase in the range of x=0.4-0.6, which is not possible by the dry process. Even in the range x=0.2-0.4, where both the methods enable to obtain the single phase, the samples prepared by the coprecipitation method had better homogeneity and smaller compositional fluctuation than these prepared dry method.

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