Please use this identifier to cite or link to this item: http://hdl.handle.net/10995/51265
Title: Crystal structure and physicochemical properties of doped lanthanum manganites
Authors: Aksenova, T. V.
Gavrilova, L. Ya.
Cherepanov, V. A.
Issue Date: 2012
Citation: Aksenova T. V. Crystal structure and physicochemical properties of doped lanthanum manganites / T. V. Aksenova, L. Ya. Gavrilova, V. A. Cherepanov // Russian Journal of Physical Chemistry A. — 2012. — Vol. 86. — № 12. — P. 1862-1868.
Abstract: Substituted lanthanum-strontium manganites La 0.7Sr 0.3Mn 0.9Me 0.1O3 ± δ (Me = Ti, Cr, Fe, and Cu) are obtained by standard ceramic and glycerin-nitrate techniques. High-temperature powder X-ray diffraction is employed to study the crystal structure of La 0.7Sr 0.3Mn 0.9Me 0.1O3 ± δ oxides. It is shown that in the range 298-1023 K in air, La 0.7Sr 0.3Mn 0.9Me 0.1O3 ± δ manganites crystallized in an orthorhombic cell (space group R-3c). The isobaric temperature dependences of unit cell parameters are determined. Thermal expansion coefficients are calculated for La 0.7Sr 0.3Mn 0.9Me 0.1O3 ± δ oxides. The conductivity of La 0.7Sr 0.3Mn 0.9Me 0.1O3 ± δ is studied as a function of temperature in the range 500 K ≥ T ≥ 1200 K in air. It is shown that substituting 3d metal for manganese considerably lowers the conductivity of basic La0.7Sr0.3Mn0.9O 3 ± δ. The chemical stability of iron-substituted manganite La 0.7Sr 0.3Mn 0.9Fe 0.1O3 ± δ is studied with respect to the electrolyte material. © Pleiades Publishing, Ltd., 2012.
Keywords: CRYSTAL STRUCTURE
HIGH-TEMPERATURE X-RAY DIFFRACTION
LANTHANUM-STRONTIUM MANGANITES
URI: http://hdl.handle.net/10995/51265
https://elar.urfu.ru/handle/10995/51265
metadata.dc.rights: info:eu-repo/semantics/restrictedAccess
SCOPUS ID: 84869045693
WOS ID: 000310345600016
PURE ID: 1067183
ISSN: 0036-0244
DOI: 10.1134/S0036024412120023
Appears in Collections:Научные публикации, проиндексированные в SCOPUS и WoS CC

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