Synthesis Of Pure And Doped Lanthanum Cobaltite By The Combustion Method

• Published in: Journal of Optoelectronics and Advanced Materials Vol. 5; no. 3; pp. 719 - 724
• Main Authors: Bergen, D, Van Landschoot, N, Ionica, C, Papa, F, Fruth, V
• Format: Journal Article
• Language: English
• Published: 01.09.2003
• ISSN: 1454-4164

The paper presents structural and morphological investigation on pure and doped lanthanum cobaltite, La(1-x)M(x)CoO(3) (M=Sr, Ca; x=0, 0.1). High specific-surface area perovskites (36 - 86 m2/g) have been synthesised by the combustion synthesis method using the corresponding metal nitrates and a- alanine as fuel the isolated complex precursors were characterised by chemical analysis, electronic and FT-IR spectra, as well as DTA-TG analysis. La(1- x)M(x)CoO(3) (x=0, 0.1) powders were characterised by X RD, IR, SEM-EDX, and specific surface area measurements. The XRD data for La(1- x)M(x)CoO(3), support the rhombohedral perovskite structure. La(1- x)M(x)CoO(3) powders are characterized by crystallites of size 31-45 nm and large values of the specific surface area.