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The doping effect of metallic Cu on the performances of manganite coatings has been investigated. The (1–x)La0.67Sr0.33MnO3/xCu (x=0–0.15) composites were prepared by the sol-gel based screen printing method. XRD and SEM measurements revealed CuO phase to form by oxidation and to distribute mainly at grain boundaries (GBs) of the manganite matrix. Excess Cu entered the manganite lattice without changing...
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