Influence of Calcium Ions on the Structure and Properties of LaMnO3

La0,7Ca0,3MnO3 polycrystalline were synthesized from La2O3, CaO and MnO2 powder mixture using a solid state reaction technique. The compound powders were obtained through the free sintering method at different temperatures and sintering times in order to study the influence of technological conditio...

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Bibliographic Details
Published in:Archives of metallurgy and materials 2020-01, Vol.65 (3), p.1189-1195
Main Authors: Bara, M, Dzik, J, Feliksik, K, Kozielski, L, Wodecka-Duś, B, Goryczka, T, Zarycka, A, Adamczyk-Habrajska, M
Format: Article
Language:English
Subjects:
Calcium ions
ceramics
Electrodes
Energy storage
Fractures
Lanthanum compounds
Lanthanum oxides
Lattice parameters
lcmo
Manganese dioxide
manganites
Morphology
sem
Sintering
Sintering (powder metallurgy)
Temperature
x-ray diffraction
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Summary:La0,7Ca0,3MnO3 polycrystalline were synthesized from La2O3, CaO and MnO2 powder mixture using a solid state reaction technique. The compound powders were obtained through the free sintering method at different temperatures and sintering times in order to study the influence of technological conditions on Ca doped La manganites. The most important physical features as structure, microstructure and morphology were described after X-ray diffraction investigation. Photographs of the specimen fractures were taken with SEM (scanning electron microscope) and they revealed high porosity of the tested material and great tendency for its grains to create agglomerates. Influence of doping and technological conditions on lattice parameters were studied by means of Rietvield analysis. The XRD measurements reveal that La0,7Ca0,3MnO3 has orthorhombic symmetry with Pnma space group.
ISSN:1733-3490
2300-1909
DOI:10.24425/amm.2020.133238