Properties of the ceramic manganite [ sintered at temperatures of 1000-1450°c

It has been shown that the ceramics [([La.sub.0.65][Ca.sub.0.35]).sub.1-x][Mn.sub.1+x][O.sub.3 ± Δ] (x = 0.2) sintered at temperatures up to 1450°C is formed as a composite material consisting of manganite and manganese oxide grains. It has been found that, at a sintering temperature of 1450°C, the...

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Bibliographic Details
Published in:Physics of the solid state 2014-09, Vol.56 (9), p.1886
Main Authors: Akimov, G. Ya, Novokhatskaya, A.A, Revenko, Yu. F
Format: Article
Language:English
Subjects:
Analysis
Ceramic materials
Ceramics
Powders
Sintering
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Summary:It has been shown that the ceramics [([La.sub.0.65][Ca.sub.0.35]).sub.1-x][Mn.sub.1+x][O.sub.3 ± Δ] (x = 0.2) sintered at temperatures up to 1450°C is formed as a composite material consisting of manganite and manganese oxide grains. It has been found that, at a sintering temperature of 1450°C, the manganite grain size abruptly increases, which is accompanied by the formation of a nanometer-sized layered structure. It has been revealed for the first time that the temperature dependence of the magnetoresistance of the ceramic manganite with this structure is characteristic of single crystals.
ISSN:1063-7834
1090-6460
DOI:10.1134/S1063783414090029