Basu, Santanu and Chakraborty, Amitava and Sujatha Devi, P and Maiti, Himadri Sekhar (2005) Electrical conduction in nano-structured La0.9Sr0.1Al0.85Co0.05Mg0.1O3 perovskite oxide. Journal of the American Ceramic Society, 88 (8). pp. 2110-2113. ISSN 0002-7820

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Nanocrystaltine La0.9Sr0.1Al0.85Co0.05Mg0.1O3 oxide powder was synthesized by a citrate-nitrate auto-ignition process and characterized by thermal analysis, X-ray diffraction, and impedance spectroscopy measurements. Nanocrystalline (50-100 nm) powder with perovskite structure could be produced at 900 degrees C by this process. The powder could be sintered to a density more than 96% of the theoretical density at 1550 degrees C. Impedance measurements on the sintered samples unequivocally established the potential of this process in developing nanostructured lanthanum aluminate-based oxides. The sintered La0.9Sr0.1Al0.85Co0.05Mg0.1O3 sample exhibited a conductivity of 2.40 x 10(-2) S/cm in air at 1000 degrees C compared with 4.9 x 10(-3) S/cm exhibited by La0.9Sr0.1Al0.85Mg0.15O3.

Item Type: Article
Subjects: Electronics
Depositing User: Bula Ghosh
Date Deposited: 15 Feb 2012 06:08
Last Modified: 15 Feb 2012 06:08

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