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Low temperature synthesis and some physical properties of barium-substituted lanthanum manganite (La1−x BaxMnO3)

Published online by Cambridge University Press:  03 March 2011

Amitava Chakraborty ,
P. Sujatha Dévi  and
H.S. Maiti
Amitava Chakraborty
Affiliation:
Electroceramics Laboratory, Central Glass & Ceramic Research Institute, Calcutta 700 032, India
P. Sujatha Dévi
Affiliation:
Electroceramics Laboratory, Central Glass & Ceramic Research Institute, Calcutta 700 032, India
H.S. Maiti
Affiliation:
Electroceramics Laboratory, Central Glass & Ceramic Research Institute, Calcutta 700 032, India
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Abstract

Barium-substituted lanthanum manganite (La1−xBaxMnO3) powders have been synthesized by a novel autoignition technique, and the effect of barium content on the autoignition characteristics, stability of the compound, and the powder characteristics have been investigated. X-ray examinations show that the material exists as a single phase having perovskite structure up to 40 at. % substitution of Ba for La, beyond which mixed phases of LaMnO3 and BaMnO3 are formed at least up to the highest limit of substitution (50 at. %) and calcination temperature (1350 °C) investigated. Electrical conductivity and thermal expansion behavior of the material have been studied for plausible use as cathode material in solid oxide fuel cells.

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Articles
Information
Journal of Materials Research , Volume 10 , Issue 4 , April 1995 , pp. 918 - 925
Copyright
Copyright © Materials Research Society 1995

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References

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