Abstract
Nanoparticles with high surface area of LaMn1−x Zn x O3+d (LMZ) (0.0≤x≤0.38) were synthesized by the Pechini-type polymerizable complex technique based on in situ polyesterification between citric acid (CA) and ethylene glycol (EG). Heating at 90 °C of a mixed solution of CA, EG, H2O, and nitrates of La, Mn, and Zn, gave a polymeric resin. The polymeric resin or citrate-derived gel was preheated at 450 °C for 2 h to give a powdered precursor of LMZ. The final heat treatment of the powdered precursor was done in static air at a temperature range 700–800 °C for 6 h. After calcinations of the dried gels, the products were characterized by the X-ray powder diffraction technique, Fourier transform infrared analysis, and scanning electron microscopy. The products are of considerable interest both for utilization as catalysts and for their exceptional magnetotransport properties.
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