TY - GEN
T1 - Mechanosynthesis of CaxLa1-xMnO3 (0<x<0.7, δx=0.1) perovskites
T2 - World Powder Metallurgy Congress and Exhibition, World PM 2010
AU - Bolarín-Miró, A. M.
AU - Cortés-Escobedo, C. A.
AU - Lira-Hernández, I. A.
AU - Barba-Pingarrón, A.
AU - Sánchez-De Jesús, F.
PY - 2010
Y1 - 2010
N2 - Reactive ball milling was employed to produce nanocrystalline calcium doped lanthanum manganites (CDLM), CaxLa1-xMnO3, for different milling times and varying the content of calcium from x=0 to x=0.7 with increments of 0.1. The aim of this work is to study the relationship between the content of calcium, the crystalline structure, and the mixed ionicelectronic conductivity. Powders of Mn2O3, La2O3, and CaO, mixed in the stoichiometric ratio, were used as raw materials. The mechanosynthesis was carried out using a high energy shaker mixer/mill. X-ray powder diffraction and Rietveld refinement were used to elucidate the crystalline structure as a function of calcium content. Electrical resistivity of the compacted and sintered powders was acquired using a milli DC ohm-meter. Results showed that it is possible to obtain CaxLa1-xMnO3 by mechanosynthesis. The mixed ionic-electronic conductivity decreases with the Ca doped level. The best conductivity is presented for the Ca0.1La0.9MnO3 composition.
AB - Reactive ball milling was employed to produce nanocrystalline calcium doped lanthanum manganites (CDLM), CaxLa1-xMnO3, for different milling times and varying the content of calcium from x=0 to x=0.7 with increments of 0.1. The aim of this work is to study the relationship between the content of calcium, the crystalline structure, and the mixed ionicelectronic conductivity. Powders of Mn2O3, La2O3, and CaO, mixed in the stoichiometric ratio, were used as raw materials. The mechanosynthesis was carried out using a high energy shaker mixer/mill. X-ray powder diffraction and Rietveld refinement were used to elucidate the crystalline structure as a function of calcium content. Electrical resistivity of the compacted and sintered powders was acquired using a milli DC ohm-meter. Results showed that it is possible to obtain CaxLa1-xMnO3 by mechanosynthesis. The mixed ionic-electronic conductivity decreases with the Ca doped level. The best conductivity is presented for the Ca0.1La0.9MnO3 composition.
KW - Crystal structure
KW - Lanthanum manganites
KW - Mechanosynthesis
KW - Rietveld refinement
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=84902157236&partnerID=8YFLogxK
M3 - Contribución a la conferencia
AN - SCOPUS:84902157236
SN - 9781899072194
T3 - Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
BT - Proceedings of the World Powder Metallurgy Congress and Exhibition, World PM 2010
PB - European Powder Metallurgy Association (EPMA)
Y2 - 10 October 2010 through 14 October 2010
ER -