TY - JOUR
T1 - Synthesis and surface characterization of the La0.7-xPrxCa0.3MnO3 (LPCM) perovskite by a non-conventional microwave irradiation method
AU - Ferrel-Álvarez, A. C.
AU - Domínguez-Crespo, M. A.
AU - Cong, H.
AU - Torres-Huerta, A. M.
AU - Brachetti-Sibaja, S. B.
AU - De La Cruz, W.
N1 - Publisher Copyright:
© 2017 Elsevier B.V.
PY - 2018/2/25
Y1 - 2018/2/25
N2 - A series of La0.7-xPrxCa0.3MnO3 (x = 0.35, 0.52 or 0.63) perovskites were synthesized using microwave method at different reaction times (3, 4 and 5 min) as possible cathode material for solid oxide fuel cell (SOFCs). SOFCs are a forward looking technology for a highly efficient, environmental friendly power generation. Variation of lattice parameters, unit cell volume and final composition with Pr concentration were analyzed by Rietveld refinement and X-ray photo electron spectroscopy (XPS). Thereafter, samples were sintered (at 1000 °C) to evaluate their electrical properties at room temperature. Rietveld refinement showed that all the samples were a single –phase perovskite –type and belongs to orthorhombic Pnma structure. The atomic composition of doped samples is close to theoretical stoichiometric values. XPS analysis revealed significant changes in the La 3d, Ca 2p, Mn 2p and O 1s intensities as a result of the Pr incorporation.
AB - A series of La0.7-xPrxCa0.3MnO3 (x = 0.35, 0.52 or 0.63) perovskites were synthesized using microwave method at different reaction times (3, 4 and 5 min) as possible cathode material for solid oxide fuel cell (SOFCs). SOFCs are a forward looking technology for a highly efficient, environmental friendly power generation. Variation of lattice parameters, unit cell volume and final composition with Pr concentration were analyzed by Rietveld refinement and X-ray photo electron spectroscopy (XPS). Thereafter, samples were sintered (at 1000 °C) to evaluate their electrical properties at room temperature. Rietveld refinement showed that all the samples were a single –phase perovskite –type and belongs to orthorhombic Pnma structure. The atomic composition of doped samples is close to theoretical stoichiometric values. XPS analysis revealed significant changes in the La 3d, Ca 2p, Mn 2p and O 1s intensities as a result of the Pr incorporation.
KW - La and Pr substitution
KW - Manganite
KW - Microwave synthesis
KW - Rietveld analysis
KW - XPS characterization
UR - http://www.scopus.com/inward/record.url?scp=85036455968&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2017.11.306
DO - 10.1016/j.jallcom.2017.11.306
M3 - Artículo
SN - 0925-8388
VL - 735
SP - 1750
EP - 1758
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
ER -